🌱 Bump sigstore/cosign-installer from 1.2.1 to 2.4.1

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 1.2.1 to 2.4.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@f700e6f...48866aa)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/publishimage.yml

@@ -60,7 +60,7 @@ jobs:
             make install
             make scorecard-ko
      - name: Install Cosign
-       uses: sigstore/cosign-installer@f700e6fbbab82f6897758a3af7a8dede4e308656
+       uses: sigstore/cosign-installer@48866aa521d8bf870604709cd43ec2f602d03ff2
      - name: Sign image
        run: |
           cosign sign ghcr.io/${{github.repository_owner}}/scorecard/v4:${{ github.sha }}