Avoid deprecation messages when sending an email with PHP 8.2

Fixes #5225

libs/swiftmailer/classes/Swift/SmtpTransport.php

@@ -32,7 +32,7 @@ class Swift_SmtpTransport extends Swift_Transport_EsmtpTransport
     public function __construct($host = 'localhost', $port = 25, $security = null)
     {
         call_user_func_array(
-            array($this, 'Swift_Transport_EsmtpTransport::__construct'),
+            'Swift_Transport_EsmtpTransport::__construct',
             Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('transport.smtp')
             );