N°8017 - Security - dependabot - Symfony's VarDumper vulnerable to un… (#731)

Upgrade all Symfony components to last security fix (~6.4.0)

lib/symfony/http-kernel/DataCollector/AjaxDataCollector.php

@@ -21,7 +21,7 @@ use Symfony\Component\HttpFoundation\Response;
  */
 class AjaxDataCollector extends DataCollector
 {
-    public function collect(Request $request, Response $response, \Throwable $exception = null): void
+    public function collect(Request $request, Response $response, ?\Throwable $exception = null): void
     {
         // all collecting is done client side
     }