Bump react-parallel/event-loop from 1.0.1 to 1.2.0

Bumps [react-parallel/event-loop](https://github.com/reactphp-parallel/event-loop) from 1.0.1 to 1.2.0.
- [Release notes](https://github.com/reactphp-parallel/event-loop/releases)
- [Commits](reactphp-parallel/event-loop@1.0.1...1.2.0)

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

Author: dependabot-preview[bot]