[TS MVP] Update TypeScript to newest version

[arkflpc]

After running yarn run reinstall, there are many versions of typescript package installed. One of them is hoisted, but it's not really explicit which one. And VSCode seems to use yet another version when showing errors in a file. All of this seem to work by pure chance. Let's unify the versions of all dependent typescript packages. Let's use the newest to be more up to date.