Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.6.3 to 3.6.4. - [Release notes](https://github.com/Microsoft/TypeScript/releases) - [Commits](https://github.com/Microsoft/TypeScript/compare/v3.6.3...v3.6.4) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>