Node v20 Issues

[markwpearce]

Two tests don't pass when targeted against node v20:

• Scope -> Validate -> Emits validation events
• XmlFile -> Transform Plugins -> Calls XML file validation plugins

I believe these are both related to chai, as they get stalled on expect() statements ?

Also, there are LOTS of linting/build errors.

Note: only tested against 0.66-alpha.9

[markwpearce]

Additionally, it looks like tests take 2x as long to run.