release: cut the v21.1.4 release #9778

Job	Run time
build-e2e-windows	3m 8s
lint	1m 50s
build	3m 41s
e2e-windows (22, webpack, 3)	3m 21s
e2e-windows (22, webpack, 0)	3m 22s
e2e-windows (22, esbuild, 3)	3m 22s
e2e-windows (22, esbuild, 2)	3m 21s
e2e-windows (22, esbuild, 4)	3m 21s
e2e-windows (22, webpack, 2)	3m 20s
e2e-windows (22, esbuild, 5)	3m 21s
e2e-windows (22, webpack, 1)	3m 22s
e2e-windows (22, webpack, 4)	3m 22s
e2e-windows (22, esbuild, 0)	3m 22s
e2e-windows (22, esbuild, 1)	3m 21s
e2e-windows (22, webpack, 5)	3m 22s
test	2m 50s
Browser Compatibility Tests	2m 50s
publish-snapshots	2m 50s
e2e-snapshots	1s
e2e	1s
e2e-package-managers	1s
	57m 29s

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