Outdated Dependencies

I was wondering what version of node is required to build the `sketch-dev-tools`? 

I encountered a deprecation warning (included below) that suggested a version earlier than Node v14. The long term support for Erbium (12.x) ended on 2022-04-30.

```
npm WARN deprecated fsevents@1.2.9: fsevents 1 will break on node v14+ and could be using insecure binaries. Upgrade to fsevents 2.
```