feat: remove async-lock in favor of OnceLock #784

Job	Run time
fmt	5s
cross (ubuntu-latest)	1m 29s
msrv (ubuntu-latest)	21s
cross (macos-latest)	1m 18s
clippy	15s
msrv (windows-latest)	52s
security_audit	6s
test (ubuntu-latest, nightly)	40s
test (ubuntu-latest, beta)	39s
windows_gnu (nightly, x86_64-pc-windows-gnu)	1m 7s
test (ubuntu-latest, stable)	35s
test (windows-latest, nightly)	1m 34s
test (windows-latest, beta)	1m 18s
test (windows-latest, stable)	2m 12s
test (macos-latest, nightly)	56s
test (macos-latest, beta)	44s
test (macos-latest, stable)	40s
	14m 51s

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