upgrade to laravel 7 and set branch to v2

vendor/phpunit/php-token-stream/src/DocComment.php

@@ -0,0 +1,12 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of phpunit/php-token-stream.
+ *
+ * (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.
+ */
+class PHP_Token_DOC_COMMENT extends PHP_Token
+{
+}