release: cut the v21.2.10 release #3035

Job	Run time
build	27s
build-e2e-windows	22s
lint	1m 58s
e2e-windows	0s
test	0s
Browser Compatibility Tests	0s
publish-snapshots	0s
e2e-package-managers	-1s
e2e	-1s
e2e-snapshots	-1s
	2m 44s

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