Replace Security component with SecurityBundle

Updated references from Symfony\Component\Security\Core\Security
to Symfony\Bundle\SecurityBundle\Security across multiple files
to align with the updated namespace and improve compatibility.

src/Bundle/ChillMainBundle/Controller/ExportController.php

@@ -43,7 +43,7 @@ use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Symfony\Component\Messenger\MessageBusInterface;
 use Symfony\Component\Routing\Annotation\Route;
-use Symfony\Component\Security\Core\Security;
+use Symfony\Bundle\SecurityBundle\Security;
 
 /**
  * Class ExportController