N°6934 - Symfony 6.4 - upgrade Symfony bundles to 6.4 (#580)

* Update Symfony lib to version ~6.4.0
* Update code missing return type
* Add an iTop general configuration entry to store application secret (Symfony mandatory parameter)
* Use dependency injection in ExceptionListener & UserProvider classes

lib/symfony/console/Event/ConsoleErrorEvent.php

@@ -22,8 +22,8 @@ use Symfony\Component\Console\Output\OutputInterface;
  */
 final class ConsoleErrorEvent extends ConsoleEvent
 {
-    private $error;
-    private $exitCode;
+    private \Throwable $error;
+    private int $exitCode;
 
     public function __construct(InputInterface $input, OutputInterface $output, \Throwable $error, Command $command = null)
     {
@@ -47,7 +47,6 @@ final class ConsoleErrorEvent extends ConsoleEvent
         $this->exitCode = $exitCode;
 
         $r = new \ReflectionProperty($this->error, 'code');
-        $r->setAccessible(true);
         $r->setValue($this->error, $this->exitCode);
     }