chore(deps): update docker/setup-buildx-action action to v3 (#594)

Co-authored-by: Renovate Bot <renovate-bot@gitea.com>
Co-committed-by: Renovate Bot <renovate-bot@gitea.com>

.gitea/workflows/release-nightly.yml

@@ -54,7 +54,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker BuildX
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Login to DockerHub
         uses: docker/login-action@v3