[chore] fix ci

searx/engines/uxwing.py

@@ -22,7 +22,7 @@ enable_http2 = False
 
 def request(query, params):
     params['url'] = f"{base_url}/?s={quote_plus(query)}"
-    params['headers'] = {'User-Agent': "Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0"}
+    params['headers'] = {'User-Agent': gen_useragent()}
     return params