build(deps): bump futures from 0.3.3 to 0.3.4

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.3 to 0.3.4.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/futures-rs/compare/0.3.3...0.3.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Cargo.lock

@@ -274,16 +274,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-executor 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -302,22 +302,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-io"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -333,20 +333,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-task"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-util"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-macro 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -402,7 +402,7 @@ dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -481,7 +481,7 @@ dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "h2 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -834,7 +834,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-postgres 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -997,7 +997,7 @@ dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding_rs 0.8.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1256,7 +1256,7 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fallible-iterator 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1311,7 +1311,7 @@ dependencies = [
  "chrono 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "dotenv 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1619,15 +1619,15 @@ dependencies = [
 "checksum foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-"checksum futures 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ad6636318d07abeb4656157ef1936c64485f066c7f9ce5d7c5b879fcb6dd5ccb"
+"checksum futures 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5c329ae8753502fb44ae4fc2b622fa2a94652c41e795143765ba0927f92ab780"
 "checksum futures-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f0c77d04ce8edd9cb903932b608268b3fffec4163dc053b3b402bf47eac1f1a8"
 "checksum futures-core 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f25592f769825e89b92358db00d26f965761e094951ac44d3663ef25b7ac464a"
-"checksum futures-executor 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "46a5e593d77bee52393c7f3b16b8b413214096d3f7dc4f5f4c57dee01ad2bdaf"
-"checksum futures-io 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3d429f824b5e5dbd45fc8e54e1005a37e1f8c6d570cd64d0b59b24d3a80b8b8e"
-"checksum futures-macro 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1d75b72904b78044e0091355fc49d29f48bff07a68a719a41cf059711e071b4"
+"checksum futures-executor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f674f3e1bcb15b37284a90cedf55afdba482ab061c407a9c0ebbd0f3109741ba"
+"checksum futures-io 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a638959aa96152c7a4cddf50fcb1e3fede0583b27157c26e67d6f99904090dc6"
+"checksum futures-macro 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "9a5081aa3de1f7542a794a397cde100ed903b0630152d0973479018fd85423a7"
 "checksum futures-sink 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "3466821b4bc114d95b087b850a724c6f83115e929bc88f1fa98a3304a944c8a6"
-"checksum futures-task 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "86f9ceab4bce46555ee608b1ec7c414d6b2e76e196ef46fa5a8d4815a8571398"
-"checksum futures-util 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "7d2f1296f7644d2cd908ebb2fa74645608e39f117c72bac251d40418c6d74c4f"
+"checksum futures-task 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7b0a34e53cf6cdcd0178aa573aed466b646eb3db769570841fda0c7ede375a27"
+"checksum futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "22766cf25d64306bedf0384da004d05c9974ab104fcc4528f1236181c18004c5"
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum generic-array 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0ed1e761351b56f54eb9dcd0cfaca9fd0daecf93918e1cfc01c8a3d26ee7adcd"
 "checksum getopts 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)" = "14dbbfd5c71d70241ecf9e6f13737f7b5ce823821063188d7e46c41d371eebd5"