Bump version to 22.0.0-rc.2 (#1474) #4262

Job	Run time
check-git-rev-deps	16s
cargo-deny (advisories)	41s
cackle	1m 16s
cargo-deny (bans licenses sources)	41s
build-and-test (msrv, 22, ubuntu-latest, wasm32-unknown-unknown, false)	11m 26s
fmt	9s
build-and-test (msrv, 22, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 42s
semver-checks	4m 23s
build-and-test (latest, 22, ubuntu-latest, wasm32-unknown-unknown, false)	9m 21s
build-and-test (latest, 22, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 30s
publish-dry-run (ubuntu-latest, wasm32-unknown-unknown) / publish-dry-run / publish-dry-run	1h 15m 11s
publish-dry-run (ubuntu-latest, x86_64-unknown-linux-gnu) / publish-dry-run / publish-dry-run	1h 13m 59s
complete	1s
	3h 34m 36s

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