[fix/version_check_test] Include utf_tools.php in version_check_test

tests/functions/version_check_test.php

@@ -7,6 +7,8 @@
 *
 */
 
+require_once(dirname(__FILE__) . '/../../../../../includes/utf/utf_tools.php');
+
 class phpbb_functions_version_check_test extends \board3\portal\tests\testframework\test_case
 {
 	protected $version_check;