docs: release notes for the v20.1.0 release #1709

Job	Run time
lint	2m 9s
build	13s
e2e_windows (windows-2025, 22, npm, 0)	30s
e2e_windows (windows-2025, 22, npm, 5)	34s
e2e_windows (windows-2025, 22, npm, 2)	34s
e2e_windows (windows-2025, 22, npm, 3)	41s
e2e_windows (windows-2025, 22, npm, 4)	39s
e2e_windows (windows-2025, 22, esbuild, 0)	37s
e2e_windows (windows-2025, 22, esbuild, 1)	28s
e2e_windows (windows-2025, 22, npm, 1)	37s
e2e_windows (windows-2025, 22, esbuild, 2)	31s
e2e_windows (windows-2025, 22, esbuild, 3)	41s
e2e_windows (windows-2025, 22, esbuild, 5)	41s
e2e_windows (windows-2025, 22, esbuild, 4)	49s
test	0s
publish-snapshots	0s
Browser Compatibility Tests	0s
e2e	0s
e2e-snapshots	0s
e2e-package-managers	0s
	9m 44s

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