chore: unify artifacts code #4621

Job	Run time
Sanitize	3m 45s
Git SHA	3s
Build buildtools	49s
Check operator CRDs	29s
Dryrun tests	42s
Integration tests (manager)	2m 14s
Unit tests	2m 38s
Integration tests (kind)	2m 29s
Build legacy DR	4m 4s
Build upgrade	4m 8s
Build current	4m 10s
Export version specifier	3s
Build previous k0s	4m 5s
Determine previous stable version	3s
Integration tests	1s
Check images	1s
Create app releases	1s
E2E	1s
E2E docker	1s
E2E Docker (install2)	1s
E2E Docker (install2, failing)	1s
E2E Install2	1s
E2E (on merge)	1s
E2E Install2 Failing	1s
Validate success	1s
	29m 53s

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