Fix dependency in composer.json.

Author: terabytesoftw

composer.json

@@ -34,6 +34,7 @@
         "symfony/browser-kit": "^6.3",
         "symfony/process": "^6.3",
         "symplify/easy-coding-standard": "^12.3",
+        "voku/portable-utf8": "dev-master as 6.0.13",
         "yii2-extensions/phpstan": "^0.3.0",
         "yiisoft/yii2-debug": "^2.1.27|^22",
         "yiisoft/yii2-gii": "^2.2.7|^22"