Update docker/metadata-action action to v5.6.1

Author: renovate[bot]

.github/workflows/build.yml

@@ -65,7 +65,7 @@ jobs:
       # https://github.com/docker/metadata-action
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 # v5.5.1
+        uses: docker/metadata-action@369eb591f429131d6889c46b94e711f089e6ca96 # v5.6.1
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}