Delete untagged image refs in Google Container Registry or Artifact Registry
Full Changelog: https://github.com/GoogleCloudPlatform/gcr-cleaner/compare/v0.7.4...v0.8.0
Full Changelog: https://github.com/GoogleCloudPlatform/gcr-cleaner/compare/v0.7.3...v0.7.4
Full Changelog: https://github.com/GoogleCloudPlatform/gcr-cleaner/compare/v0.7.2...v0.7.3