actionchain: ingest failure: trufflehog (upstream broken) #4783
Description
All 6 CI failures are caused by a transient GitHub infrastructure issue. Every failing check (Test Super-Linter environment variable configuration, test-lookup-only, Test on ubuntu-latest, test-restore-only, test-jest-unit-tests, Test strip_tag_prefix) fails at the actions/checkout@v4 step with the same error: "remote: Internal Server Error" / "fatal: unable to access 'https://github.com/dlorenc/actionchain/': The requested URL returned error: 500". GitHub's git server returned HTTP 500 during the fetch operation, which is a transient infrastructure failure that cannot be fixed in test code. The tests never even reached execution - they failed during repository checkout.