[clustermgtd] Fix an issue where the Slurm node Comment and Extra fields could alter the node information read by ParallelCluster. - #741

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: francesco-giordano/gh-pr-content-checker@v1.0.0. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/