Bumps [loopback](https://github.com/strongloop/loopback) from 3.27.0 to 3.28.0. - [Release notes](https://github.com/strongloop/loopback/releases) - [Changelog](https://github.com/strongloop/loopback/blob/master/CHANGES.md) - [Commits](https://github.com/strongloop/loopback/compare/v3.27.0...v3.28.0) Signed-off-by: dependabot[bot] <support@github.com>