Bump github.com/sigstore/cosign/v2 from 2.2.0 to 2.2.1

Bumps [github.com/sigstore/cosign/v2](https://github.com/sigstore/cosign) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/sigstore/cosign/releases)
- [Changelog](https://github.com/sigstore/cosign/blob/main/CHANGELOG.md)
- [Commits](sigstore/cosign@v2.2.0...v2.2.1)

---
updated-dependencies:
- dependency-name: github.com/sigstore/cosign/v2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>