Update Stacktrace detection script. - #269

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b, portswigger-tim/safer-runner-action@b2208f653b6bf422e08501155f4df82bad008184. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/