In order to make this lib compatible with PHP 7.3, update the dependency to helum/config

Author: Konafets

composer.json

@@ -6,7 +6,7 @@
         "php": ">=7.0 <7.4",
         "ext-json": "*",
         "typo3/cms-core": "^7.6 || ^8.7",
-        "helhum/config-loader": "^0.9",
+        "helhum/config-loader": "^0.12",
         "helhum/typo3-console": "^5.4",
         "symfony/console": "^2.7 || ^3.0 || ^4.0",
         "symfony/yaml": "^2.8 || ^3.0 || ^4.0",