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

.gitea/workflows/build-docker-image.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5