Upgrade typescript from 4.2.4 to 4.4.3

[guusdk]

This intends to prevent the following compilation error:

$ npm run compile

> [email protected] compile
> tsc -p .

node_modules/@types/babel__traverse/index.d.ts:326:10 - error TS1023: An index signature parameter type must be either 'string' or 'number'.

326         [k: `${string}|${string}`]: VisitNode<S, Node>;
             ~


Found 1 error.

Inspiration for this change was taken from DefinitelyTyped/DefinitelyTyped#65766

@legastero please be aware that I'm out of my depth here. I'm suggesting this change without truly understanding the problem that it apparently fixes. Please review carefully.