docs: release notes for the v20.0.3 release #8098

Job	Run time
build	1m 52s
lint	2m 8s
e2e_windows (windows-2025, 22, esbuild, 1)	6m 19s
e2e_windows (windows-2025, 22, esbuild, 0)	6m 17s
e2e_windows (windows-2025, 22, esbuild, 3)	6m 19s
e2e_windows (windows-2025, 22, esbuild, 4)	6m 13s
e2e_windows (windows-2025, 22, npm, 1)	6m 20s
e2e_windows (windows-2025, 22, npm, 3)	6m 18s
e2e_windows (windows-2025, 22, npm, 2)	6m 16s
e2e_windows (windows-2025, 22, esbuild, 2)	6m 8s
e2e_windows (windows-2025, 22, npm, 4)	6m 15s
e2e_windows (windows-2025, 22, esbuild, 5)	6m 19s
e2e_windows (windows-2025, 22, npm, 0)	6m 13s
e2e_windows (windows-2025, 22, npm, 5)	6m 14s
publish-snapshots	4m 11s
test	4m 38s
Browser Compatibility Tests	4m 35s
e2e-snapshots	1s
e2e	1s
e2e-package-managers	1s
	1h 32m 38s

Provide feedback