release: cut the v20.2.1 release #1877

Job	Run time
lint	2m 11s
build	19s
build-e2e-windows	18s
e2e-windows	-1s
test	-1s
Browser Compatibility Tests	-1s
publish-snapshots	-1s
e2e-snapshots	0s
e2e	0s
e2e-package-managers	0s
	2m 44s

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