dep: phpunit 추가

vendor/sebastian/recursion-context/src/Exception.php

@@ -0,0 +1,16 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of the Recursion Context package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\RecursionContext;
+
+use Throwable;
+
+interface Exception extends Throwable
+{
+}