Bump parking_lot from 0.10.2 to 0.12.0 (#1030)

Bumps [parking_lot](https://github.com/Amanieu/parking_lot) from 0.10.2 to 0.12.0.
- [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/0.10.2...0.12.0)

---
updated-dependencies:
- dependency-name: parking_lot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

cumulus/Cargo.lock

@@ -1622,7 +1622,7 @@ dependencies = [
  "cumulus-primitives-core",
  "cumulus-relay-chain-interface",
  "futures 0.3.21",
- "parking_lot 0.10.2",
+ "parking_lot 0.12.0",
  "sc-client-api",
  "sc-consensus",
  "sp-api",
@@ -1649,7 +1649,7 @@ dependencies = [
  "futures 0.3.21",
  "futures-timer",
  "parity-scale-codec",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "polkadot-client",
  "polkadot-node-primitives",
  "polkadot-parachain",
@@ -1710,7 +1710,7 @@ dependencies = [
  "cumulus-primitives-core",
  "cumulus-relay-chain-interface",
  "parity-scale-codec",
- "parking_lot 0.10.2",
+ "parking_lot 0.12.0",
  "polkadot-overseer",
  "polkadot-primitives",
  "sc-chain-spec",
@@ -1972,7 +1972,7 @@ dependencies = [
  "cumulus-primitives-core",
  "derive_more",
  "futures 0.3.21",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "polkadot-overseer",
  "sc-client-api",
  "sc-service",
@@ -1994,7 +1994,7 @@ dependencies = [
  "cumulus-test-service",
  "futures 0.3.21",
  "futures-timer",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "polkadot-client",
  "polkadot-primitives",
  "polkadot-service",
@@ -2118,7 +2118,7 @@ dependencies = [
  "jsonrpc-core",
  "pallet-transaction-payment",
  "parity-scale-codec",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.0",
  "polkadot-primitives",
  "polkadot-service",
  "polkadot-test-service",