Bump docker/metadata-action from 3.8.0 to 4.0.1 (#584)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 3.8.0 to 4.0.1.
- [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@v3.8.0...v4.0.1)

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

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

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

Author: dependabot[bot]

.github/workflows/registry.yaml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v3.8.0
+        uses: docker/metadata-action@v4.0.1
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           flavor: |