release: cut the v19.2.20 release #9790

Job	Run time
build	7m 5s
lint	2m 8s
Browser Compatibility Tests	6m 12s
test	21m 11s
publish-snapshots	5m 25s
e2e-package-managers	0s
e2e-snapshots	0s
e2e	0s
	42m 1s

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