build(deps): bump docker/metadata-action from 4.6.0 to 5.5.1

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 4.6.0 to 5.5.1.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Upgrade guide](https://github.com/docker/metadata-action/blob/master/UPGRADE.md)
- [Commits](docker/metadata-action@v4.6.0...v5.5.1)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/publish.yaml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v4.6.0
+        uses: docker/metadata-action@v5.5.1
         with:
           images: |
             bspborg/smartbirds-server