build(deps): bump sigstore/cosign-installer from 3.0.3 to 3.0.4

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v3.0.3...v3.0.4)

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

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

.github/workflows/build.yml

@@ -172,7 +172,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/[email protected].3
+      - uses: sigstore/[email protected].4
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'
 
       - name: Sign container image