Bump phpgt/http from 1.1.6 to 1.1.8

Bumps [phpgt/http](https://github.com/PhpGt/Http) from 1.1.6 to 1.1.8.
- [Release notes](https://github.com/PhpGt/Http/releases)
- [Commits](phpgt/Http@v1.1.6...v1.1.8)

---
updated-dependencies:
- dependency-name: phpgt/http
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]