Update docker/metadata-action action to v5.6.1 (#136)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         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 }}
         if: github.ref == 'refs/heads/main'