feature: Add an option to enable Telegram to work behind a proxy. (#6125)

Co-authored-by: Frank Elsinga <frank@elsinga.de>

server/notification-providers/kook.js

@@ -22,6 +22,7 @@ class Kook extends NotificationProvider {
             },
         };
         try {
+            config = this.getAxiosConfigWithProxy(config);
             await axios.post(url, data, config);
             return okMsg;