Add scripts for updating the Node and Chromium versions

[koesie10]

This adds two scripts:

• A script that will automatically set the correct Node.js versions based on the latest release of VS Code. It can be run using npx ts-node scripts/update-node-version.ts. I'll add a GitHub Actions workflow that runs this on a schedule in a follow-up PR so that a PR is automatically created when the Node.js version is updated.
• A script that will automatically update the Chromium version based on the minimum supported version of VS Code. It can be run using npx ts-node scripts/update-chromium-version.ts. I'll add a GitHub Actions workflow in a follow-up PR that checks that this version is still current (as part of the main workflow).

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[norascheuch]

Thanks for making that change!