Update parking_lot requirement from 0.11 to 0.12 (#1735)

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@0.11.0...0.12.0)

---
updated-dependencies:
- dependency-name: parking_lot
  dependency-type: direct:production
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ballista/rust/client/Cargo.toml

@@ -35,7 +35,7 @@ log = "0.4"
 tokio = "1.0"
 tempfile = "3"
 sqlparser = "0.13"
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 datafusion = { path = "../../../datafusion", version = "6.0.0" }
 

ballista/rust/core/Cargo.toml

@@ -48,7 +48,7 @@ parse_arg = "0.1.3"
 arrow-flight = { version = "8.0.0"  }
 datafusion = { path = "../../../datafusion", version = "6.0.0" }
 
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 [dev-dependencies]
 tempfile = "3"

ballista/rust/executor/Cargo.toml

@@ -46,7 +46,7 @@ tokio-stream = { version = "0.1", features = ["net"] }
 tonic = "0.6"
 uuid = { version = "0.8", features = ["v4"] }
 hyper = "0.14.4"
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 [dev-dependencies]
 

ballista/rust/scheduler/Cargo.toml

@@ -53,7 +53,7 @@ tokio-stream = { version = "0.1", features = ["net"], optional = true }
 tonic = "0.6"
 tower = { version = "0.4" }
 warp = "0.3"
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 [dev-dependencies]
 ballista-core = { path = "../core", version = "0.6.0" }

datafusion/Cargo.toml

@@ -78,7 +78,7 @@ avro-rs = { version = "0.13", features = ["snappy"], optional = true }
 num-traits = { version = "0.2", optional = true }
 pyo3 = { version = "0.15", optional = true }
 tempfile = "3"
-parking_lot = "0.11"
+parking_lot = "0.12"
 
 [dev-dependencies]
 criterion = "0.3"