Upgrade to TypeScript 4.8

[benmccann]

Describe the problem

We're currently on TypeScript 4.7. We should probably update to TypeScript 4.8 while we're making a bunch of breaking changes

Describe the proposed solution

Run pnpm -r update typescript

I tried and running pnpm check on the kit project is causing some issue with the generated types that I don't understand saying that await parent() is returning null. I'm only a TypeScript beginner, so am hoping someone more knowledgeable might have some more insight

Alternatives considered

No response

Importance

nice to have

Additional Information

No response

[dummdidumm]

The error is coming from a change in behavior on TypeScript's side, I opened microsoft/TypeScript#50519 to see if this intended or a bug.