Bump markdown from 3.2.1 to 3.2.2

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.2.1 to 3.2.2.
- [Release notes](https://github.com/Python-Markdown/markdown/releases)
- [Commits](Python-Markdown/markdown@3.2.1...3.2.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements/base.txt

@@ -7,7 +7,7 @@ django-contrib-comments==1.9.2
 django-modern-rpc==0.12.0
 django-simple-history==2.10.0
 jira==2.0.0
-Markdown==3.2.1
+Markdown==3.2.2
 python-gitlab==2.2.0
 python-redmine==2.2.1
 topicaxis-opengraph==0.5