docs: release notes for the v20.1.2 release #1735

Job	Run time
lint	2m 13s
build	23s
e2e_windows (windows-2025, 22, npm, 0)	25s
e2e_windows (windows-2025, 22, npm, 4)	41s
e2e_windows (windows-2025, 22, npm, 1)	26s
e2e_windows (windows-2025, 22, npm, 3)	27s
e2e_windows (windows-2025, 22, npm, 2)	57s
e2e_windows (windows-2025, 22, esbuild, 4)	27s
e2e_windows (windows-2025, 22, npm, 5)	39s
e2e_windows (windows-2025, 22, esbuild, 1)	37s
e2e_windows (windows-2025, 22, esbuild, 5)	28s
e2e_windows (windows-2025, 22, esbuild, 3)	30s
e2e_windows (windows-2025, 22, esbuild, 2)	39s
e2e_windows (windows-2025, 22, esbuild, 0)	42s
test	-1s
Browser Compatibility Tests	-1s
publish-snapshots	-1s
e2e-package-managers	0s
e2e	0s
e2e-snapshots	0s
	9m 31s

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