rector/config/set/rector-config.php

<?php

declare (strict_types=1);
namespace RectorPrefix20220527;

use Rector\Config\RectorConfig;
use Rector\DogFood\Rector\Closure\UpgradeRectorConfigRector;
return static function (RectorConfig $rectorConfig) : void {
    $rectorConfig->rule(UpgradeRectorConfigRector::class);
};