Merge pull request #4742 from OSGeo/dependabot/github_actions/all-actions-7f16315847

Bump docker/metadata-action from 5 to 6 in the all-actions group

Author: rouault

.github/workflows/docker.yml

@@ -83,7 +83,7 @@ jobs:
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Extract container metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ghcr.io/osgeo/${{ matrix.container }}