Create migration notes in Rust docs for v22 #4450

Job	Run time
check-git-rev-deps	19s
cargo-deny (advisories)	37s
build-fuzz	2m 54s
cargo-deny (bans licenses sources)	39s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	44s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	42s
docs	32s
fmt	23s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	3m 20s
publish-dry-run	0s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	45s
readme	18s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	37s
release-notes	2m 49s
semver-checks	31s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	1m 44s
complete	1s
	16m 55s

Provide feedback