Upgrade PHPStan

Author: natanfelles

composer.json

@@ -39,7 +39,7 @@
         "ergebnis/composer-normalize": "^2.25",
         "jetbrains/phpstorm-attributes": "^1.0",
         "phpmd/phpmd": "^2.13",
-        "phpstan/phpstan": "^1.5",
+        "phpstan/phpstan": "^2.2",
         "phpunit/phpunit": "^10.5"
     },
     "minimum-stability": "dev",

src/ArraySimple.php

@@ -155,8 +155,8 @@ protected static function getKeys(array $array, string $childKey = '') : array
     }
 
     /**
-     * @param array<int,string> $parent
-     * @param array<int,string> $childs
+     * @param array<mixed> $parent
+     * @param array<mixed> $childs
      * @param mixed $value
      */
     protected static function addChild(array &$parent, array $childs, mixed $value) : void