[v1.x] Fix refreshed access tokens not reaching tool handlers - #3794

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

Failed to save: Unable to reserve cache with key setup-uv-2-x86_64-unknown-linux-gnu-ubuntu-26.04-3.14.4-pruned-77ea97d4f444ae70d84caadb5608529dd883731ea59579044b5f68a776e9dc71, another job may be creating this cache.