Bump markdown from 3.5.2 to 3.6

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.5.2 to 3.6.
- [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@3.5.2...3.6)

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

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

test_reqs.txt

@@ -1,4 +1,4 @@
-Markdown==3.5.2  # pyup: <3.2
+Markdown==3.6  # pyup: <3.2
 coverage==7.4.4
 importlib_metadata<7.1
 typing_extensions==4.10.0