Enable use of aws-lc-rs instead of ring #4709

Job	Run time
msrv	30s
lint	32s
test on freebsd	3m 55s
test-aws-lc-rs	1m 0s
test (ubuntu-latest, stable)	1m 1s
test (ubuntu-latest, beta)	1m 8s
audit	18s
test (macos-latest, stable)	1m 29s
features (ubuntu-latest)	10s
test (windows-latest, stable)	2m 38s
features (macos-latest)	16s
test-android (x86_64-linux-android, x86_64, 26)	4m 36s
features (windows-latest)	12s
test-android (i686-linux-android, x86, 26)	4m 2s
	21m 47s

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