Update code standards in the module

Author: TavoNiievez

composer.json

@@ -20,6 +20,7 @@
     "minimum-stability": "RC",
     "require": {
         "php": "^7.3 | ^8.0",
+        "ext-json": "*",
         "codeception/lib-innerbrowser": "^1.3",
         "codeception/codeception": "^4.0"
     },