Bump markdown from 3.4.3 to 3.5.1

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.4.3 to 3.5.1.
- [Release notes](https://github.com/Python-Markdown/markdown/releases)
- [Changelog](https://github.com/Python-Markdown/markdown/blob/master/docs/changelog.md)
- [Commits](Python-Markdown/markdown@3.4.3...3.5.1)

---
updated-dependencies:
- dependency-name: markdown
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -13,7 +13,7 @@ django-debug-toolbar==3.8.1
 bleach==6.0.0
 gunicorn==20.1.0
 lxml==4.9.3
-Markdown==3.4.3
+Markdown==3.5.1
 Pillow==10.0.1
 psycopg2-binary==2.9.5
 python-dotenv==1.0.0