Merge pull request #145 from OpenSourceEcon/dependabot/pip/markdown-3.8.1

Bump markdown from 3.2.2 to 3.8.1

Author: rickecon

requirements.txt

@@ -6,7 +6,7 @@ Flask-Markdown==0.3
 gunicorn==23.0.0
 itsdangerous==1.1.0
 Jinja2==3.1.6
-Markdown==3.2.2
+Markdown==3.8.1
 MarkupSafe==1.1.1
 Pygments==2.15.0
 webassets==2.0