Bump docker/metadata-action from 4.4.0 to 4.6.0 (#213)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 4.4.0 to 4.6.0.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@v4.4.0...v4.6.0)

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

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

.github/workflows/publish_docker.yml

@@ -29,7 +29,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v4.4.0
+        uses: docker/metadata-action@v4.6.0
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}