ci: make the wedge hunt keep what it catches (#564) - #572

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/