Merge pull request #500 from jupyterhub/dependabot/github_actions/docker/setup-buildx-action-3

build(deps): bump docker/setup-buildx-action from 2 to 3

Author: consideRatio

.github/workflows/publish.yml

@@ -54,7 +54,7 @@ jobs:
         uses: docker/setup-qemu-action@v2
 
       - name: Set up Docker Buildx (for multi-arch builds)
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Setup push rights to Docker Hub
         # This was setup by...