fix: Make DynamicEndpoint safe for concurrent requests (#639) - #640

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@85e6279cec87321a52edac9c87bce653a07cf6c2, github/codeql-action/analyze@486ab5a2922b634015408a83e10f6867efb5922c, github/codeql-action/init@486ab5a2922b634015408a83e10f6867efb5922c. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/