Upgrade framework

vendor/league/commonmark/src/Extension/Strikethrough/StrikethroughExtension.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com> and uAfrica.com (http://uafrica.com)
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Strikethrough;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\ExtensionInterface;
+
+final class StrikethroughExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addDelimiterProcessor(new StrikethroughDelimiterProcessor());
+        $environment->addRenderer(Strikethrough::class, new StrikethroughRenderer());
+    }
+}