Bump markdown from 3.0.1 to 3.8.1

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.0.1 to 3.8.1.
- [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@3.0.1...3.8.1)

---
updated-dependencies:
- dependency-name: markdown
  dependency-version: 3.8.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 Django>=4.2,<4.3
 psycopg2==2.8.5
 pycryptodomex>=3.4.7,<3.5
-Markdown==3.0.1
+Markdown==3.8.1
 requests-oauthlib==1.0.0
 cvss==2.2
 pytidylib==0.3.2