Bump async-mutex from 0.4.1 to 0.5.0

[dependabot[bot]]

Bumps async-mutex from 0.4.1 to 0.5.0.

Changelog

Sourced from async-mutex's changelog.

0.5.0

• Support priority queueing for mutexes and semaphores. A huge "thank you" goes to @​dmurvihill who added this feature.
• Update dependencies.

Commits

• ca071fc Changelog, bump version.
• 3b8ae6f Bump dependencies.
• 43e8858 Merge pull request #75 from dmurvihill/priority
• 285229f Remove redundant instructions
• 4350d80 Reverse findIndex for queuing tasks in waitForUnlock()
• 981554f Fix test name
• 2d13278 Reverse findIndex for queuing tasks in acquire()
• c546c3f Merge branch 'master' into priority
• 6a55acb Add failing test for crowd-out condition
• 6af938b Merge pull request #76 from dmurvihill/fix-unhandled-rejection-in-tests
• Additional commits viewable in compare view

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