release: cut the v21.0.5 release #2823

Job	Run time
list	25s
workflow (build-cli)	1m 42s
workflow (devkit-core-tests)	1m 18s
workflow (modules-builder-tests)	2m 1s
workflow (build-unit-tests)	2m 29s
workflow (devkit-core-tests-rerun)	1m 31s
	9m 26s

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