Update docker/metadata-action digest to a60f0f6

Author: renovate[bot]

.github/workflows/docker-publish.yml

@@ -73,7 +73,7 @@ jobs:
 
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@be19121bfd18b9c1ac415d9571d4f67b9b357886
+        uses: docker/metadata-action@a60f0f62b5c12316066c8db464bfb2faafd7907b
         with:
           images: |
             ${{ env.REGISTRY_GHCR }}/${{ env.IMAGE_NAME }}