Bump typescript from 3.9.3 to 3.9.5 (#8503)
Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.3 to 3.9.5.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.9.3...v3.9.5)
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