Merge pull request #29 from finleap-connect/dependabot/github_actions/docker/metadata-action-4

ghactions: bump docker/metadata-action from 3 to 4

Author: jastBytes

.github/workflows/publish.yaml

@@ -70,7 +70,7 @@ jobs:
 
       - name: Extract metadata
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: ${{ env.REGISTRY }}/${{ env.REPOSITORY }}
           tags: |