chore: improve error logs in commands/admin/app.go (#20549) #29523

Job	Run time
set-vars	3s
build-only	0s
build-and-publish / publish	19m 57s
Deploy	10s
build-and-publish-provenance / detect-env	3s
build-and-publish-provenance / generator	18s
build-and-publish-provenance / final	1s
	20m 32s

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