Bump cloud_controller_ng

Dependency updates in cloud_controller_ng:

- build(deps): bump nokogiri from 1.18.3 to 1.18.4
    PR: cloudfoundry/cloud_controller_ng#4265
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: ari-wg-gitbot