chore(deps): update docker/setup-buildx-action action to v4

Author: renovate[bot]

.github/workflows/docker.yml

@@ -30,7 +30,7 @@ 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: Login to Docker Hub 🔑
         uses: docker/login-action@v3