build(deps): bump markdown-it-py from 3.0.0 to 4.0.0

Bumps [markdown-it-py](https://github.com/executablebooks/markdown-it-py) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/executablebooks/markdown-it-py/releases)
- [Changelog](https://github.com/executablebooks/markdown-it-py/blob/master/CHANGELOG.md)
- [Commits](https://github.com/executablebooks/markdown-it-py/compare/v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: markdown-it-py
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -10,7 +10,7 @@ fastapi_cli==0.0.20
 rich-toolkit==0.17.1
 python-fasthtml==0.12.36
 MonsterUI==1.0.36
-markdown-it-py==3.0.0
+markdown-it-py==4.0.0
 mdit-py-plugins==0.5.0
 bokeh==3.8.1
 uvicorn==0.40.0