next.js

a850edbe - Bump typescript 5.9.2 (#83833)

Bump typescript 5.9.2 (#83833) This PR bumps TypeScript [5.9](https://devblogs.microsoft.com/typescript/announcing-typescript-5-9/). --------- Co-authored-by: Sebastian "Sebbie" Silbermann <sebastian.silbermann@vercel.com>