docs: release notes for the v20.0.0 release #7994

Job	Run time
build	32s
lint	21s
e2e_windows (windows-2025, 22, npm, 3)	19s
e2e_windows (windows-2025, 22, npm, 5)	19s
e2e_windows (windows-2025, 22, npm, 1)	32s
e2e_windows (windows-2025, 22, esbuild, 0)	19s
e2e_windows (windows-2025, 22, esbuild, 1)	19s
e2e_windows (windows-2025, 22, esbuild, 3)	20s
e2e_windows (windows-2025, 22, npm, 0)	20s
e2e_windows (windows-2025, 22, npm, 2)	18s
e2e_windows (windows-2025, 22, npm, 4)	18s
e2e_windows (windows-2025, 22, esbuild, 4)	19s
e2e_windows (windows-2025, 22, esbuild, 5)	20s
e2e_windows (windows-2025, 22, esbuild, 2)	15s
test	1s
Browser Compatibility Tests	1s
e2e	1s
publish-snapshots	1s
e2e-package-managers	1s
e2e-snapshots	1s
	4m 57s

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