LCORE-2547: rename llama_stack config key to ogx with deprecated alias - #2560

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: thehanimo/pr-title-checker@v1.4.3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/