Avoid deprecation messages when sending an email with PHP 8.2

Fixes #5225

libs/swiftmailer/classes/Swift/LoadBalancedTransport.php

@@ -23,7 +23,7 @@ class Swift_LoadBalancedTransport extends Swift_Transport_LoadBalancedTransport
     public function __construct($transports = array())
     {
         call_user_func_array(
-            array($this, 'Swift_Transport_LoadBalancedTransport::__construct'),
+            'Swift_Transport_LoadBalancedTransport::__construct',
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('transport.loadbalanced')
             );