Mario Campos upgraded the github/codeql-action repository to support Node.js v24, modernizing its CI/CD workflows and improving runtime compatibility. He implemented cross-version validation for Node.js v20 and v24, updated tests and documentation, and stabilized pull request checks by addressing dependency issues. Using JavaScript, Node.js, and GitHub Actions, Mario unified verification scripts and reverted type definitions to ensure consistent builds. He also enhanced documentation integrity by updating changelogs and fixing broken links in related docs repositories. His work reduced build friction, improved CI reliability, and ensured users accessed accurate workflow guidance, reflecting a thorough and systematic approach to engineering challenges.