Quickfix since code is already in Mill - #215

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, gradle/actions/setup-gradle@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

This job uses deprecated functionality from the 'gradle/actions/setup-gradle' action. Consult the Job Summary for more details.

Restore Gradle distribution 7.4 failed: Error: Cache service responded with 400