chore: release v2.2.1 #17

Job	Run time
check-and-lint	23s
adapter-tests (24.x, windows-latest)	5m 43s
adapter-tests (20.x, ubuntu-latest)	53s
adapter-tests (20.x, windows-latest)	8m 58s
adapter-tests (24.x, macos-latest)	59s
adapter-tests (22.x, ubuntu-latest)	51s
adapter-tests (20.x, macos-latest)	1m 19s
adapter-tests (24.x, ubuntu-latest)	50s
adapter-tests (22.x, macos-latest)	1m 20s
adapter-tests (22.x, windows-latest)	4m 36s
	25m 52s

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