Add optional username and email fields to repo for commits (#5477) (#… #1313

Job	Run time
artifacts (ghcr.io/pipe-cd, helloworld)	4m 1s
artifacts (ghcr.io/pipe-cd, launcher)	4m 6s
artifacts (ghcr.io/pipe-cd, launcher-okd)	4m 4s
artifacts (ghcr.io/pipe-cd, pipecd)	5m 34s
artifacts (ghcr.io/pipe-cd, piped)	4m 23s
artifacts (ghcr.io/pipe-cd, piped-okd)	4m 29s
artifacts (ghcr.io/pipe-cd, pipectl)	4m 20s
artifacts (gcr.io/pipecd, helloworld)	4m 30s
artifacts (gcr.io/pipecd, launcher)	4m 4s
artifacts (gcr.io/pipecd, piped)	4m 17s
release-quickstart-manifests	0s
	43m 48s

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