Update dependency league/commonmark to ^2.7.0 [SECURITY]

| datasource | package           | from  | to    |
| ---------- | ----------------- | ----- | ----- |
| packagist  | league/commonmark | 2.4.2 | 2.7.0 |


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

Author: renovate[bot]

composer.json

@@ -30,7 +30,7 @@
         "laminas/laminas-servicemanager": "^3.22.1",
         "laminas/laminas-stdlib": "^3.19.0",
         "laminas/laminas-stratigility": "^3.11.0",
-        "league/commonmark": "^2.4.2",
+        "league/commonmark": "^2.7.0",
         "mezzio/mezzio": "^3.19.0",
         "mezzio/mezzio-fastroute": "^3.11.0",
         "mezzio/mezzio-hal": "^2.9.0",