chore(deps): bump docker/setup-buildx-action from 3 to 4 (#48)

Author: Scotchester

.github/workflows/publish-devcontainer.yml

@@ -33,7 +33,7 @@ jobs:
 
       - name: Set up Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Build, tag, and push image to GHCR [python ${{ matrix.python-version }}]
         uses: docker/build-push-action@v6