Upgrade typescript across packages

[Janpot]

Also noticed that the docs package is currently using 3.8.3:

warn  - Minimum recommended TypeScript version is v4.3.2, older versions can potentially be incompatible with Next.js. Detected: 3.8.3

=>

> yarn list typescript
├─ [email protected]
│  └─ [email protected]
└─ [email protected]

This also results from not having a real dependency on a docs package but just importing from a workspace inside of a github dependency. Our docs don't really use the dependencies we think it's using. I added a dependency to typescript to the docs workspace and that fixed the problem.

> yarn list typescript
├─ [email protected]
│  ├─ [email protected]
│  │  └─ [email protected]
│  └─ [email protected]
└─ [email protected]

It now becomes clear it had hoisted typescript from typescript-to-proptypes to the root of the docs folder.

Anyway, that should be fixed now. No new typescript issues on the docs, only on the toolpad app.

See mui/material-ui#33031

[render]

Your Render PR Server URL is https://toolpad-pr-897.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-ccb0jrb19n0f92eb6np0.