build(deps): bump tokio from 0.2.10 to 0.2.11

Bumps [tokio](https://github.com/tokio-rs/tokio) from 0.2.10 to 0.2.11.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-0.2.10...tokio-0.2.11)

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

Cargo.lock

@@ -402,7 +402,7 @@ dependencies = [
  "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-util 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -486,7 +486,7 @@ dependencies = [
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "want 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -499,7 +499,7 @@ dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tls 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -831,7 +831,7 @@ dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-postgres 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tls 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1009,7 +1009,7 @@ dependencies = [
  "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_urlencoded 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tls 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen 0.2.56 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1216,7 +1216,7 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "0.2.10"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1258,7 +1258,7 @@ dependencies = [
  "pin-project-lite 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "postgres-protocol 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "postgres-types 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-util 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1268,7 +1268,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1281,7 +1281,7 @@ dependencies = [
  "futures-sink 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project-lite 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1321,7 +1321,7 @@ dependencies = [
  "rust_team_data 1.0.0 (git+https://github.com/rust-lang/team)",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-postgres 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1719,7 +1719,7 @@ dependencies = [
 "checksum termcolor 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb6bfa289a4d7c5766392812c0a1f4c1ba45afa1ad47803c11e1f407d846d75f"
 "checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
 "checksum time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
-"checksum tokio 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)" = "c1fc73332507b971a5010664991a441b5ee0de92017f5a0e8b00fd684573045b"
+"checksum tokio 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8fdd17989496f49cdc57978c96f0c9fe5e4a58a8bddc6813c449a4624f6a030b"
 "checksum tokio-macros 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f4b1e7ed7d5d4c2af3d999904b0eebe76544897cdbfb2b9684bed2174ab20f7c"
 "checksum tokio-postgres 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c03cb0c66092269a9b280e9e4956cb23ce00b8a6b1b393f7700f7732ac4bf133"
 "checksum tokio-tls 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7bde02a3a5291395f59b06ec6945a3077602fac2b07eeeaf0dee2122f3619828"