Repository navigation

Make `auth` in `GitHubApiDetails` optional #5069

Job	Run time
Upload debug artifacts (default)	4m 39s
Upload debug artifacts (linked)	4m 41s
Upload debug artifacts (nightly-latest)	4m 23s
Upload debug artifacts (stable-v2.20.7)	5m 0s
Download and check debug artifacts	13s
	18m 56s