Bump version to "v20.3.30" with changelog. #14613

Job	Run time
lint	3m 16s
build-e2e-windows-subset	7m 57s
build	7m 43s
analyze	6s
e2e-package-managers (ubuntu-latest, 22, pnpm, 0)	5m 55s
e2e-package-managers (ubuntu-latest, 22, yarn, 1)	6m 57s
e2e-package-managers (ubuntu-latest, 22, yarn, 2)	7m 3s
test	4m 17s
e2e-package-managers (ubuntu-latest, 22, yarn, 0)	7m 50s
e2e-package-managers (ubuntu-latest, 22, pnpm, 2)	5m 58s
e2e-package-managers (ubuntu-latest, 22, pnpm, 1)	4m 33s
e2e (ubuntu-latest, 22, npm, 3)	8m 32s
e2e (ubuntu-latest, 22, npm, 2)	9m 46s
e2e (ubuntu-latest, 22, esbuild, 0)	9m 33s
e2e (ubuntu-latest, 22, esbuild, 5)	8m 0s
e2e (ubuntu-latest, 22, npm, 1)	9m 39s
e2e (ubuntu-latest, 22, esbuild, 1)	10m 25s
e2e (ubuntu-latest, 22, npm, 4)	10m 26s
e2e (ubuntu-latest, 22, npm, 5)	13m 14s
e2e (ubuntu-latest, 22, npm, 0)	11m 15s
e2e (ubuntu-latest, 22, esbuild, 4)	6m 14s
e2e (ubuntu-latest, 22, esbuild, 2)	9m 8s
e2e (ubuntu-latest, 22, esbuild, 3)	9m 17s
e2e-snapshots	-1s
e2e-windows-subset	4m 47s
	3h 1m 50s

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