Update parking_lot requirement from 0.10 to 0.11

Updates the requirements on [parking_lot](https://github.com/Amanieu/parking_lot) to permit the latest version.
- [Release notes](https://github.com/Amanieu/parking_lot/releases)
- [Changelog](https://github.com/Amanieu/parking_lot/blob/master/CHANGELOG.md)
- [Commits](Amanieu/parking_lot@0.10.0...0.11.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

Cargo.toml

@@ -69,7 +69,7 @@ inkwell_internals = { path = "./internal_macros", version = "0.2.0" }
 libc = "0.2"
 llvm-sys = "100.0.1"
 once_cell = "1.2"
-parking_lot = "0.10"
+parking_lot = "0.11"
 regex = "1"
 static-alloc = { version = "0.2", optional = true }