Bump sigstore/cosign-installer from 3.9.2 to 4.0.0 (#2044)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.9.2 to 4.0.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](https://github.com/sigstore/cosign-installer/compare/v3.9.2...v4.0.0)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/publish-image.yml

@@ -179,7 +179,7 @@ jobs:
           done <<< "$tags"
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.9.2
+        uses: sigstore/cosign-installer@v4.0.0
 
       - name: Cosign sign all tags (keyless OIDC)
         shell: bash