build(deps-dev): bump rollup from 1.12.3 to 1.12.4
build(deps-dev): bump rollup from 1.12.3 to 1.12.4

Bumps [rollup](https://github.com/rollup/rollup) from 1.12.3 to 1.12.4.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v1.12.3...v1.12.4)
ui-router/angular,ui-router/angular,wawyed/ng2,ui-router/angular,ui-router/angular,wawyed/ng2,wawyed/ng2