docs: release notes for the v19.2.1 release #7403

Job	Run time
e2e_windows (windows-2025, 22, npm, 0)	7m 31s
build	2m 47s
lint	2m 40s
e2e_windows (windows-2025, 22, npm, 1)	7m 32s
e2e_windows (windows-2025, 22, npm, 2)	7m 30s
e2e_windows (windows-2025, 22, npm, 3)	7m 30s
e2e_windows (windows-2025, 22, npm, 4)	7m 30s
e2e_windows (windows-2025, 22, npm, 5)	7m 31s
e2e_windows (windows-2025, 22, esbuild, 0)	7m 28s
e2e_windows (windows-2025, 22, esbuild, 1)	7m 27s
e2e_windows (windows-2025, 22, esbuild, 2)	7m 32s
e2e_windows (windows-2025, 22, esbuild, 3)	7m 28s
e2e_windows (windows-2025, 22, esbuild, 4)	7m 28s
e2e_windows (windows-2025, 22, esbuild, 5)	7m 33s
publish-snapshots	4m 51s
Browser Compatibility Tests	4m 51s
test	4m 51s
e2e-package-managers	1s
e2e	1s
e2e-snapshots	1s
	1h 50m 3s

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