Merge pull request #1138 from modelcontextprotocol/dependabot/github_actions/docker/metadata-action-6

chore(deps): bump docker/metadata-action from 5 to 6

Author: cliffhall

.github/workflows/main.yml

@@ -88,7 +88,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ghcr.io/${{ github.repository }}