build(deps-dev): bump typescript from 3.7.5 to 3.8.2

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.7.5 to 3.8.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/commits

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>