[DEPS][COMPOSER]: Bump brianium/paratest from 7.5.7 to 7.6.0

Bumps [brianium/paratest](https://github.com/paratestphp/paratest) from 7.5.7 to 7.6.0.
- [Release notes](https://github.com/paratestphp/paratest/releases)
- [Commits](paratestphp/paratest@v7.5.7...v7.6.0)

---
updated-dependencies:
- dependency-name: brianium/paratest
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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