Merge pull request #436 from PHPCSStandards/feature/ghactions-fix-build

Tests - Generic/ESLint: fix test

Author: jrfnl

src/Standards/Generic/Tests/Debug/ESLintUnitTest.php

@@ -52,6 +52,8 @@ protected function setUpPrerequisites()
         $cwd = getcwd();
         file_put_contents($cwd.'/.eslintrc.json', self::ESLINT_CONFIG);
 
+        putenv('ESLINT_USE_FLAT_CONFIG=false');
+
     }//end setUpPrerequisites()