Update node.js version

Make sure everything still works!

This will give us:
- improved debugging
- new features
- new version of npm with package-lock to define dependency versions
- and more!

Start by locating the repository's Node.js and npm version declarations and dependency lockfile, then inspect the project commands used to verify it works. Done means the project runs successfully with the updated Node.js and npm versions, with dependency versions recorded in package-lock.

Written by the indexing model from the issue text.