another style guide fix

Author: 0xcrypto

tests/Validation/ValidationRequiredIfTest.php

@@ -3,8 +3,8 @@
 namespace Illuminate\Tests\Validation;
 
 use Exception;
-use InvalidArgumentException;
 use Illuminate\Validation\Rules\RequiredIf;
+use InvalidArgumentException;
 use PHPUnit\Framework\TestCase;
 
 class ValidationRequiredIfTest extends TestCase