docs: release notes for the v20.0.0-rc.0 release #431

Job	Run time
build	14s
lint	2m 11s
e2e_windows (windows-2025, 22, npm, 0)	43s
e2e_windows (windows-2025, 22, npm, 1)	51s
e2e_windows (windows-2025, 22, npm, 3)	45s
e2e_windows (windows-2025, 22, esbuild, 1)	1m 21s
e2e_windows (windows-2025, 22, npm, 2)	1m 44s
e2e_windows (windows-2025, 22, npm, 5)	1m 44s
e2e_windows (windows-2025, 22, npm, 4)	1m 41s
e2e_windows (windows-2025, 22, esbuild, 0)	1m 44s
e2e_windows (windows-2025, 22, esbuild, 2)	54s
e2e_windows (windows-2025, 22, esbuild, 5)	1m 25s
e2e_windows (windows-2025, 22, esbuild, 4)	53s
e2e_windows (windows-2025, 22, esbuild, 3)	1m 43s
publish-snapshots	0s
e2e	0s
e2e-package-managers	0s
Browser Compatibility Tests	0s
test	0s
e2e-snapshots	-1s
	17m 52s

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