Bump cloud_controller_ng

Changes in cloud_controller_ng:

- Fix shutdown of periodic_updater
    PR: cloudfoundry/cloud_controller_ng#4711
    Author: Jochen Ehret <[email protected]>

Dependency updates in cloud_controller_ng:

- build(deps): bump sequel_pg from 1.18.1 to 1.18.2
    PR: cloudfoundry/cloud_controller_ng#4716
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

- build(deps-dev): bump webrick from 1.9.1 to 1.9.2
    PR: cloudfoundry/cloud_controller_ng#4715
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: ari-wg-gitbot