Bump react-parallel/event-loop from 1.1.0 to 1.2.0

Bumps [react-parallel/event-loop](https://github.com/reactphp-parallel/event-loop) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/reactphp-parallel/event-loop/releases)
- [Commits](reactphp-parallel/event-loop@1.1.0...1.2.0)

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

Author: dependabot[bot]

composer.json

@@ -15,7 +15,7 @@
         "moneyphp/money": "^3.2.1",
         "ocramius/package-versions": "^1.4",
         "react-parallel/contracts": "^1.0",
-        "react-parallel/event-loop": "^1.1",
+        "react-parallel/event-loop": "^1.2",
         "react/event-loop": "^1.1",
         "react/promise": "^2.7",
         "thecodingmachine/safe": "^1.3",