Bump markdown-it-py from 3.0.0 to 4.2.0

Bumps [markdown-it-py](https://github.com/executablebooks/markdown-it-py) from 3.0.0 to 4.2.0.
- [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
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -39,7 +39,7 @@ python = "<4.0,>=3.10"
 requests = "^2.32.0"
 python-dotenv = "^1.2.1"
 PyYAML = "^6.0"
-markdown-it-py = "^3.0"
+markdown-it-py = ">=3,<5"
 mdit-py-plugins = ">=0.5,<0.7"
 fastmcp = { version = "^3.1.1", optional = true }