Upgrade parking_lot to 0.11.1

Cargo.toml

@@ -10,7 +10,7 @@ license = "MIT"
 bytes = "1.0"
 crossbeam-channel = "0.5.0"
 futures = { version = "0.3.8", default-features = false, features = ["thread-pool"] }
-parking_lot = "0.11.0"
+parking_lot = "0.11.1"
 rand = "0.8.0"
 tokio = { version = "1.0", features = ["rt-multi-thread", "time", "parking_lot"] }