Bump react/http from 1.8.0 to 1.9.0

Bumps [react/http](https://github.com/reactphp/http) from 1.8.0 to 1.9.0.
- [Release notes](https://github.com/reactphp/http/releases)
- [Changelog](https://github.com/reactphp/http/blob/1.x/CHANGELOG.md)
- [Commits](reactphp/http@v1.8.0...v1.9.0)

---
updated-dependencies:
- dependency-name: react/http
  dependency-type: indirect
...

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