Update dependency league/commonmark to ^2.8.1 (#523)

| datasource | package           | from  | to    |
| ---------- | ----------------- | ----- | ----- |
| packagist  | league/commonmark | 2.8.0 | 2.8.1 |

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -16,7 +16,7 @@
         "cuyz/valinor": "1.17.0",
         "filp/whoops": "^2.18.4",
         "intervention/image": "^3.11.7",
-        "league/commonmark": "^2.8.0",
+        "league/commonmark": "^2.8.1",
         "spatie/commonmark-shiki-highlighter": "^2.5.2",
         "symfony/config": "^7.4.6",
         "symfony/finder": "^7.4.6",