build(deps): bump typescript from 4.0.5 to 4.1.3 in /lib (wtho#55)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.0.5 to 4.1.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.0.5...v4.1.3)

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