build(deps): bump gitpython from 3.1.46 to 3.1.50 - #611

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/