build(deps): bump parking_lot_core from 0.8.0 to 0.8.1

Bumps [parking_lot_core](https://github.com/Amanieu/parking_lot) from 0.8.0 to 0.8.1.
- [Release notes](https://github.com/Amanieu/parking_lot/releases)
- [Changelog](https://github.com/Amanieu/parking_lot/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Amanieu/parking_lot/compare/0.8.0...0.8.1)

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

Cargo.lock

@@ -215,15 +215,6 @@ dependencies = [
  "vec_map",
 ]
 
-[[package]]
-name = "cloudabi"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4344512281c643ae7638bbabc3af17a11307803ec8f0fcad9fae512a8bf36467"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "comrak"
 version = "0.8.2"
@@ -1097,12 +1088,11 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c361aa727dd08437f2f1447be8b59a33b0edd15e0fcee698f935613d9efbca9b"
+checksum = "d7c6d9b8427445284a09c55be860a15855ab580a417ccad9da88f5a06787ced0"
 dependencies = [
- "cfg-if 0.1.10",
- "cloudabi",
+ "cfg-if 1.0.0",
  "instant",
  "libc",
  "redox_syscall",