chore(deps): update dependency markdown to v3.8.1 [security]

Author: renovate[bot]

requirements.txt

@@ -6,7 +6,7 @@ gitdb==4.0.10
 GitPython==3.1.30
 importlib-metadata==4.13.0
 Jinja2==3.1.2
-Markdown==3.4.1
+Markdown==3.8.1
 MarkupSafe==2.1.1
 mergedeep==1.3.4
 mike==1.1.2