diff BUGFIX climb data tree parents to cross schema-mount boundary - #2542

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: jwlawson/actions-setup-cmake@09fd9b0fb3b239b4b68d9256cd65adf8d6b91da0, SimenB/github-actions-cpu-cores@v1. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/