Bump prettier from 1.16.1 to 1.16.3

Bumps [prettier](https://github.com/prettier/prettier) from 1.16.1 to 1.16.3.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/1.16.1...1.16.3

)

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