Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](d13028333d...6e04d228eb)
---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>