Fix super-linter

Author: tvdijen

.github/workflows/php.yml

@@ -34,7 +34,7 @@ jobs:
           VALIDATE_CSS: true
           VALIDATE_JAVASCRIPT_ES: true
           VALIDATE_JSON: true
-          VALIDATE_PHP_BUILTIN: true
+          VALIDATE_PHP_BUILTIN: false
           VALIDATE_YAML: true
           VALIDATE_XML: true
           VALIDATE_GITHUB_ACTIONS: true