What's Changed
- [release-1.21] Replace registry.centos.org by @cevich in #4854
- [release-1.21] conformance test: ignore file type bits when comparing layers by @cevich in #5265
- [release-1.21] conformance tests: don't break on trailing zeroes in layer blobs by @openshift-cherrypick-robot in #5509
- [release-1.21] tests/conformance/testdata/Dockerfile.add:... by @openshift-cherrypick-robot in #6054
- [release-1.21] Bump runc to v1.2.9 - CVE-2025-52881 by @dashea in #6522
Full Changelog: v1.21.5...v1.21.6