chore: add declare(strict_types=1) in rector.php

Author: kenjis

rector.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Rector\CodeQuality\Rector\BooleanAnd\SimplifyEmptyArrayCheckRector;
 use Rector\CodeQuality\Rector\Expression\InlineIfToExplicitIfRector;
 use Rector\CodeQuality\Rector\For_\ForToForeachRector;
@@ -37,8 +39,15 @@
 use Rector\Set\ValueObject\SetList;
 
 return static function (RectorConfig $rectorConfig): void {
-    $rectorConfig->sets([SetList::DEAD_CODE, LevelSetList::UP_TO_PHP_74, PHPUnitSetList::PHPUNIT_SPECIFIC_METHOD, PHPUnitSetList::PHPUNIT_80]);
+    $rectorConfig->sets([
+        SetList::DEAD_CODE,
+        LevelSetList::UP_TO_PHP_74,
+        PHPUnitSetList::PHPUNIT_SPECIFIC_METHOD,
+        PHPUnitSetList::PHPUNIT_80,
+    ]);
+
     $rectorConfig->parallel();
+
     // The paths to refactor (can also be supplied with CLI arguments)
     $rectorConfig->paths([
         __DIR__ . '/src/',