Upgrade php to v8.3 with rector

docs/source/development/user-interface/widgets/ChillPersonExtension.php

@@ -22,6 +22,7 @@ use Symfony\Component\HttpKernel\DependencyInjection\Extension;
  */
 class ChillPersonExtension extends Extension implements PrependExtensionInterface
 {
+    #[\Override]
     public function load(array $configs, ContainerBuilder $container)
     {
         // ...
@@ -32,6 +33,7 @@ class ChillPersonExtension extends Extension implements PrependExtensionInterfac
      *
      * @param \Chill\PersonBundle\DependencyInjection\containerBuilder $container
      */
+    #[\Override]
     public function prepend(ContainerBuilder $container)
     {
         $container->prependExtensionConfig('chill_main', [