chore(deps): bump docker/metadata-action in the all group

Bumps the all group with 1 update: [docker/metadata-action](https://github.com/docker/metadata-action).


Updates `docker/metadata-action` from 5.5.1 to 5.6.1
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@v5.5.1...v5.6.1)

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

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

.github/workflows/packages.yml

@@ -24,7 +24,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v5.5.1
+        uses: docker/metadata-action@v5.6.1
         with:
           images: ghcr.io/stac-utils/stac-fastapi-pgstac
       - name: Build and push Docker image