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Make `auth` in `GitHubApiDetails` optional #5069

Job	Run time
Upload debug artifacts after failure in analyze (nightly-latest)	1m 42s
Upload debug artifacts after failure in analyze (default)	1m 37s
Upload debug artifacts after failure in analyze (stable-v2.20.7)	1m 59s
Upload debug artifacts after failure in analyze (linked)	2m 6s
Download and check debug artifacts after failure in analyze	9s
	7m 33s