release: cut the v19.2.18 release #8887

Job	Run time
build	6m 33s
lint	2m 2s
publish-snapshots	5m 49s
Browser Compatibility Tests	6m 32s
test	26m 7s
e2e-package-managers	0s
e2e-snapshots	0s
e2e	0s
	47m 3s

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