fix: correct context window tokens for GPT-5 Pro and GPT-5.4 Mini/Nano - #30938

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955, github/codeql-action/analyze@ebcb5b36ded6beda4ceefea6a8bc4cc885255bb3, github/codeql-action/init@ebcb5b36ded6beda4ceefea6a8bc4cc885255bb3, github/codeql-action/upload-sarif@ebcb5b36ded6beda4ceefea6a8bc4cc885255bb3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/