workflows: bump peter-evans/dockerhub-description from 3 to 4

Bumps [peter-evans/dockerhub-description](https://github.com/peter-evans/dockerhub-description) from 3 to 4.
- [Release notes](https://github.com/peter-evans/dockerhub-description/releases)
- [Commits](peter-evans/dockerhub-description@v3...v4)

---
updated-dependencies:
- dependency-name: peter-evans/dockerhub-description
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/update-dockerhub.yaml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Docker Hub Description
-        uses: peter-evans/dockerhub-description@v3
+        uses: peter-evans/dockerhub-description@v4
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}