:seedling: Bump github.com/google/go-containerregistry (#2800)

Bumps [github.com/google/go-containerregistry](https://github.com/google/go-containerregistry) from 0.21.6 to 0.21.7.
- [Release notes](https://github.com/google/go-containerregistry/releases)
- [Commits](https://github.com/google/go-containerregistry/compare/v0.21.6...v0.21.7)

---
updated-dependencies:
- dependency-name: github.com/google/go-containerregistry
  dependency-version: 0.21.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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