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/framework-bundle/DependencyInjection/Compiler/ContainerBuilderDebugDumpPass.php

@@ -25,8 +25,15 @@ use Symfony\Component\DependencyInjection\Dumper\XmlDumper;
  */
 class ContainerBuilderDebugDumpPass implements CompilerPassInterface
 {
+    /**
+     * @return void
+     */
     public function process(ContainerBuilder $container)
     {
+        if (!$container->getParameter('debug.container.dump')) {
+            return;
+        }
+
         $cache = new ConfigCache($container->getParameter('debug.container.dump'), true);
         if (!$cache->isFresh()) {
             $cache->write((new XmlDumper($container))->dump(), $container->getResources());