Merge pull request #508 from MilesCranmer/dependabot/github_actions/d…

…ocker/setup-buildx-action-3

Bump docker/setup-buildx-action from 2 to 3

.github/workflows/docker_deploy.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       - name: Build and push
         uses: docker/build-push-action@v3
         with: