Should help developers understand they are not running the minimum required node

[jdjkelly]

Goal

• Enforce major version of Node LTS (v14.17.x) as a minimum required version in project
• We can do this with package.json somehow

@jamais-vu encountered this in setup leading to an error about missing the randomUUID function from the crypto lib because it was added in 14.17. As long as we pin ourselves to the LTS version of the runtime, I think it's fine to have a pretty high version req)