Update docker/metadata-action digest to 2a4836a

Author: renovate[bot]

.github/workflows/container.yaml

@@ -44,7 +44,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@79f06a31c0239ef7cd295f017ff96abdf7bbe84d
+        uses: docker/metadata-action@2a4836ac76fe8f5d0ee3a0d89aa12a80cc552ad3
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}