Worked on the govuk-one-login/github-actions repository to deliver configurable Python version handling within GitHub Actions CI workflows. Developed a new input parameter for specifying the Python version, defaulting to Python 3.13 while preserving backward compatibility for existing workflows. Refactored YAML configuration to move defaults into input definitions and removed brittle fallback logic, resulting in more consistent and maintainable CI/CD pipelines. Updated all relevant workflows to standardize on Python 3.13 for code quality and security checks, reducing CI flakiness and improving cross-repository compatibility. Utilized skills in CI/CD, GitHub Actions, and Python to enhance workflow flexibility and maintainability.