Merge pull request #1136 from modelcontextprotocol/dependabot/github_actions/docker/setup-buildx-action-4

chore(deps): bump docker/setup-buildx-action from 3 to 4

Author: cliffhall

.github/workflows/main.yml

@@ -96,7 +96,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Build and push Docker image
         id: push