Bump gitleaks/gitleaks-action from 2 to 3 - #4

Process completed with exit code 1.

gotBody.ResponseFormat undefined (type chatRequest has no field or method ResponseFormat)

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/