chore(deps): bump actions/setup-go from 6.5.0 to 7.0.0 - #15

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: gitleaks/gitleaks-action@dcedce43c6f43de0b836d1fe38946645c9c638dc. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/