Bump parking_lot from 0.10.0 to 0.11.1 in /exonum-java-binding/core/rust

Bumps [parking_lot](https://github.com/Amanieu/parking_lot) from 0.10.0 to 0.11.1.
- [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...0.11.1)

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

Author: dependabot-preview[bot]

exonum-java-binding/core/rust/Cargo.lock

@@ -30,7 +30,7 @@ futures = "0.1"
 jni = { version = "0.15", features = ["invocation"] }
 lazy_static = "1.3"
 log = "0.4"
-parking_lot = "0.10"
+parking_lot = "0.11"
 protobuf = { version = "2.8", features = ["with-serde"] }
 serde = { version = "1.0", features = ["serde_derive"] }
 structopt = "0.3"