🌱 Bump markdown2 from 2.4.12 to 2.4.13 (#651)

Bumps [markdown2](https://github.com/trentm/python-markdown2) from 2.4.12 to 2.4.13.
- [Changelog](https://github.com/trentm/python-markdown2/blob/master/CHANGES.md)
- [Commits](trentm/python-markdown2@2.4.12...2.4.13)

---
updated-dependencies:
- dependency-name: markdown2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -10,7 +10,7 @@ idna==3.6
 Jinja2==3.1.3
 lxml==5.1.0
 Markdown==3.5.2
-markdown2==2.4.12
+markdown2==2.4.13
 MarkupSafe==2.1.5
 mergedeep==1.3.4
 mkdocs==1.5.3