Build(deps-dev): Bump react-test-renderer from 16.6.3 to 16.8.6
Build(deps-dev): Bump react-test-renderer from 16.6.3 to 16.8.6

Bumps [react-test-renderer](https://github.com/facebook/react/tree/HEAD/packages/react-test-renderer) from 16.6.3 to 16.8.6.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v16.8.6/packages/react-test-renderer)
rcdexta/react-event-timeline,rcdexta/react-event-timeline,rcdexta/react-event-timeline