phpstan, rector, phpcs fixes

src/Bundle/ChillEventBundle/migrations/Version20250506114531.php

@@ -2,6 +2,13 @@
 
 declare(strict_types=1);
 
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
 namespace Chill\Migrations\Event;
 
 use Doctrine\DBAL\Schema\Schema;