Bump parking_lot_core from 0.9.8 to 0.9.9

Bumps [parking_lot_core](https://github.com/Amanieu/parking_lot) from 0.9.8 to 0.9.9.
- [Changelog](https://github.com/Amanieu/parking_lot/blob/master/CHANGELOG.md)
- [Commits](Amanieu/parking_lot@core-0.9.8...core-0.9.9)

---
updated-dependencies:
- dependency-name: parking_lot_core
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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