release: cut the v21.2.9 release #3008

Job	Run time
build	27s
lint	2m 8s
build-e2e-windows	28s
Browser Compatibility Tests	0s
publish-snapshots	0s
test	0s
e2e	0s
e2e-snapshots	0s
e2e-package-managers	0s
e2e-windows	0s
	3m 3s

Provide feedback