`gh-actions/envoy/ci/request`: De-private wierdly private avatars #4689

Job	Run time
gh-actions (20.x, appauth)	27s
gh-actions (20.x, dispatch)	25s
gh-actions (20.x, github/checks)	25s
gh-actions (20.x, github/mutex)	26s
gh-actions (20.x, github/script/run)	18s
gh-actions (20.x, hashfiles)	18s
gh-actions (20.x, jq)	17s
gh-actions (20.x, retest)	34s
gh-actions (20.x, torun)	19s
	3m 29s

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