Bump ts-loader from 4.0.0 to 4.0.1

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases/tag/v4.0.1)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/master/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v4.0.0...v4.0.1)

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

Author: dependabot-support