[DAEMON-319] appcd-core: Upgrade to latest Node.js 12 LTS release
|Appc Daemon 4.0.0
While the daemon supports Node 10, we should update the core to Node 12 so that we can use the latest features such as workers. Node.js doesn't gain us much as far as removing Babel transpilation. We could switch over to ES modules, but we still need to transpile for dynamic imports and optional chaining. We probably cannot remove Babel until Node 14 goes LTS in late 2020.
- Chris Barber 2020-04-01