Merge pull request #2870 from github/mbg/ci/retire-ubuntu-20.04 #433

Job	Run time
Upload debug artifacts after failure in analyze (stable-v2.20.3)	1m 51s
Upload debug artifacts after failure in analyze (default)	1m 29s
Upload debug artifacts after failure in analyze (linked)	1m 49s
Upload debug artifacts after failure in analyze (nightly-latest)	2m 4s
Download and check debug artifacts after failure in analyze	7s
	7m 20s

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