deps(deps): update markdown-it-py requirement

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...v4.0.0)

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

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

Author: dependabot[bot]

scripts/requirements.txt

@@ -5,7 +5,7 @@ markdown>=3.4.4,<4.0.0    # Markdown to HTML conversion with extensions
 jinja2>=3.1.2,<4.0.0      # HTML template engine
 beautifulsoup4>=4.12.0,<5.0.0  # HTML/XML parsing and metadata extraction
 pyyaml>=6.0,<7.0          # YAML configuration parsing
-markdown-it-py>=3.0.0,<4.0.0  # Markdown parser with AST support for validation
+markdown-it-py>=3.0.0,<5.0.0  # Markdown parser with AST support for validation
 
 # Additional dependencies for enhanced markdown processing
 # Note: These are included automatically with markdown[extra] but listed for clarity