Bump sigstore/cosign-installer from 3.9.2 to 4.0.0

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](d58896d6a1...faadad0cce)

---
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>

.github/workflows/docker-publish.yml

@@ -39,7 +39,7 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 #v3.9.2
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad #v4.0.0
         with:
           cosign-release: 'v2.2.4'