chore(deps): bump sigstore/cosign-installer from 3.1.1 to 3.1.2 (#2727)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](6e04d228eb...11086d2504)

---
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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/images.yaml

@@ -105,7 +105,7 @@ jobs:
 
     # Sign images if not a PR.
     - if: github.event_name != 'pull_request'
-      uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 # v3.1.1
+      uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
     - if: github.event_name != 'pull_request'
       run: |
         cosign sign --yes \