Update docker/setup-buildx-action action to v3

Author: renovate[bot]

.github/workflows/docker.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v4.3.0