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/dependency-injection/Compiler/ResolveReferencesToAliasesPass.php

@@ -22,8 +22,10 @@ use Symfony\Component\DependencyInjection\Reference;
  */
 class ResolveReferencesToAliasesPass extends AbstractRecursivePass
 {
+    protected bool $skipScalars = true;
+
     /**
-     * {@inheritdoc}
+     * @return void
      */
     public function process(ContainerBuilder $container)
     {
@@ -39,10 +41,7 @@ class ResolveReferencesToAliasesPass extends AbstractRecursivePass
         }
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function processValue($value, bool $isRoot = false)
+    protected function processValue(mixed $value, bool $isRoot = false): mixed
     {
         if (!$value instanceof Reference) {
             return parent::processValue($value, $isRoot);