update deprecated pusher option (laravel#5058)

Gavrisimo · taylorotwell · commit afb7cd7311ac · 2019-07-11T09:03:22.000-06:00
diff --git a/config/broadcasting.php b/config/broadcasting.php
@@ -37,7 +37,7 @@
             'app_id' => env('PUSHER_APP_ID'),
             'options' => [
                 'cluster' => env('PUSHER_APP_CLUSTER'),
-                'encrypted' => true,
+                'useTLS' => true,
             ],
         ],
 
