tests

chore: release 2.21.0 (#2533) #7859

Job	Run time
FreeBSD and OpenBSD compilation check	15s
integration tests (ubuntu-latest)	2m 7s
integration tests (windows-latest)	3m 33s
unit tests	1m 19s
integration tests (macos-latest)	2m 54s
	10m 8s

Provide feedback