⬆️ Update docker/setup-buildx-action action to v4

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -56,7 +56,7 @@ jobs:
       - name: 🏗 Set up QEMU
         uses: docker/setup-qemu-action@v3.7.0
       - name: 🏗 Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.12.0
+        uses: docker/setup-buildx-action@v4.0.0
       - name: 🏗  Login to GitHub Container Registry
         uses: docker/login-action@v3.7.0
         with: