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

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

server/notification-providers/whapi.js

@@ -11,13 +11,14 @@ class Whapi extends NotificationProvider {
         const okMsg = "Sent Successfully.";
 
         try {
-            const config = {
+            let config = {
                 headers: {
                     "Accept": "application/json",
                     "Content-Type": "application/json",
                     "Authorization": "Bearer " + notification.whapiAuthToken,
                 }
             };
+            config = this.getAxiosConfigWithProxy(config);
 
             let data = {
                 "to": notification.whapiRecipient,