Bump react/http from 1.5.0 to 1.8.0 (#620)

Bumps [react/http](https://github.com/reactphp/http) from 1.5.0 to 1.8.0.
- [Release notes](https://github.com/reactphp/http/releases)
- [Changelog](https://github.com/reactphp/http/blob/1.x/CHANGELOG.md)
- [Commits](reactphp/http@v1.5.0...v1.8.0)

---
updated-dependencies:
- dependency-name: react/http
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Arkadiusz Kondas <[email protected]>