build(deps): update markdown-it-py requirement from >=3.0.0 to >=4.2.0

Updates the requirements on [markdown-it-py](https://github.com/executablebooks/markdown-it-py) to permit the latest version.
- [Release notes](https://github.com/executablebooks/markdown-it-py/releases)
- [Changelog](https://github.com/executablebooks/markdown-it-py/blob/master/CHANGELOG.md)
- [Commits](executablebooks/markdown-it-py@v3.0.0...v4.2.0)

---
updated-dependencies:
- dependency-name: markdown-it-py
  dependency-version: 4.2.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "cfbs>=5.5.0",
     "tree-sitter-cfengine>=1.1.12",
     "tree-sitter>=0.25",
-    "markdown-it-py>=3.0.0",
+    "markdown-it-py>=4.2.0",
     "PyYAML>=6.0.3",
 ]
 classifiers = [