def render_project(
        self,
        project: Dict[str, Any],
        project_root: str,
    ) -> Dict[str, Any]:
        """Render the project and insert the project root after rendering."""
        rendered_project = self.render_data(project)
        rendered_project["project-root"] = project_root
        return rendered_project
Render the project and insert the project root after rendering.
core/dbt/config/renderer.py