hard code locale for tests

Author: phpfui

Tests/bootstrap.php

@@ -40,7 +40,7 @@ function autoload(string $className) : void
 
 \PHPFUI\ORM::setTranslationCallback(\PHPFUI\Translation\Translator::trans(...));
 \PHPFUI\Translation\Translator::setTranslationDirectory(__DIR__ . '/../translations');
-\PHPFUI\Translation\Translator::setLocale(\Locale::getDefault());
+\PHPFUI\Translation\Translator::setLocale('en_US');
 
 $tables = \PHPFUI\ORM::getTables();