Enhancement

Many of the dependencies are now 5+ years old, with several deprecations. These are causing upstream issues, for example:

• webpack-contrib fails on M1-based Macs (due to an old Electron version)
• several dependencies cause TypeScript errors because dojo is requiring an old version of TS
• deprecated dependencies are simply failing at some points

As a first phase, the toolchain dependencies need to be updated to use current versions as much as possible.

I expect upgrading dependencies will have a cascading effect through most of the dojo packages. Because some dependencies have been deprecated and replaced, it may be necessary to change some scripts and operations accordingly.