Bump cloud_controller_ng

Dependency updates in cloud_controller_ng:

- build(deps): bump nokogiri from 1.17.2 to 1.18.0
    PR: cloudfoundry/cloud_controller_ng#4154
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

- build(deps-dev): bump rack-test from 2.1.0 to 2.2.0
    PR: cloudfoundry/cloud_controller_ng#4152
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>