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/twig-bridge/TokenParser/DumpTokenParser.php

@@ -29,9 +29,6 @@ use Twig\TokenParser\AbstractTokenParser;
  */
 final class DumpTokenParser extends AbstractTokenParser
 {
-    /**
-     * {@inheritdoc}
-     */
     public function parse(Token $token): Node
     {
         $values = null;
@@ -43,9 +40,6 @@ final class DumpTokenParser extends AbstractTokenParser
         return new DumpNode($this->parser->getVarName(), $values, $token->getLine(), $this->getTag());
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function getTag(): string
     {
         return 'dump';