chore(deps): update docker/metadata-action digest to 318604b

Author: renovate[bot]

.github/workflows/image-build.yml

@@ -63,7 +63,7 @@ jobs:
           image: tonistiigi/binfmt:qemu-v8.1.5
       - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3
 
-      - uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5
+      - uses: docker/metadata-action@318604b99e75e41977312d83839a89be02ca4893 # v5
         id: meta
         with:
           flavor: ${{ matrix.flavor }}