DX: rector rules upt to PHP 74

src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadCustomFields.php

@@ -115,9 +115,7 @@ class LoadCustomFields extends AbstractFixture implements
 
         // get possible values for cfGroup
         $choices = array_map(
-            static function ($a) {
-                return $a['slug'];
-            },
+            static fn($a) => $a['slug'],
             $this->customFieldChoice->getOptions()['choices']
         );
         // create faker