Update ESLint / Prettier and associated plugins

[mcmire]

Dependabot has been attempting to update these plugins, but cannot because of the new changes made to the ESLint plugins, namely, turning on type-aware rules. Some changes may have to be made to the ESLint config plugin in this repo. We may even have to change how ESLint runs so that it runs per-package instead of running across the whole repo, but I'm not sure yet.