Update parking_lot requirement from 0.11 to 0.12

[dependabot[bot]]

Updates the requirements on parking_lot to permit the latest version.

Changelog

Sourced from parking_lot's changelog.

parking_lot 0.12.1 (2022-05-31)

• Fixed incorrect memory ordering in RwLock. (#344)
• Added Condvar::wait_while convenience methods (#343)

parking_lot_core 0.9.3 (2022-04-30)

• Bump windows-sys dependency to 0.36. (#339)

parking_lot_core 0.9.2, lock_api 0.4.7 (2022-03-25)

• Enable const new() on lock types on stable. (#325)
• Added MutexGuard::leak function. (#333)
• Bump windows-sys dependency to 0.34. (#331)
• Bump petgraph dependency to 0.6. (#326)
• Don't use pthread attributes on the espidf platform. (#319)

parking_lot_core 0.9.1 (2022-02-06)

• Bump windows-sys dependency to 0.32. (#316)

parking_lot 0.12.0, parking_lot_core 0.9.0, lock_api 0.4.6 (2022-01-28)

• The MSRV is bumped to 1.49.0.
• Disabled eventual fairness on wasm32-unknown-unknown. (#302)
• Added a rwlock method to report if lock is held exclusively. (#303)
• Use new asm! macro. (#304)
• Use windows-rs instead of winapi for faster builds. (#311)
• Moved hardware lock elision support to a separate Cargo feature. (#313)
• Removed used of deprecated spin_loop_hint. (#314)

parking_lot 0.11.2, parking_lot_core 0.8.4, lock_api 0.4.5 (2021-08-28)

• Fixed incorrect memory orderings on RwLock and WordLock. (#294, #292)
• Added Arc-based lock guards. (#291)
• Added workaround for TSan's lack of support for fence. (#292)

lock_api 0.4.4 (2021-05-01)

• Update for latest nightly. (#281)

lock_api 0.4.3 (2021-04-03)

• Added [Raw]ReentrantMutex::is_owned. (#280)

parking_lot_core 0.8.3 (2021-02-12)

• Updated smallvec to 1.6. (#276)

parking_lot_core 0.8.2 (2020-12-21)

... (truncated)

Commits

• 336a9b3 Release parking_lot 0.12.1
• b69a054 Merge pull request #343 from bryanhitc/master
• 3fe7233 Merge pull request #344 from Amanieu/fix_rwlock_ordering
• ef12b00 small test update
• fdb063c wait_while can't timeout fix
• 26e19dc Remove WaitWhileResult
• d26c284 Fix incorrect memory ordering in RwLock
• 0458283 Use saturating_add for WaitWhileResult
• 686db47 Add Condvar::wait_while convenience methods
• 6f6e021 Merge pull request #342 from MarijnS95/patch-1
• Additional commits viewable in compare view

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