Bump cloud_controller_ng

Changes in cloud_controller_ng:

- Including this require ensures the AzureRM client is registered and available
    PR: cloudfoundry/cloud_controller_ng#4550
    Author: Katharina Przybill <[email protected]>

Dependency updates in cloud_controller_ng:

- build(deps-dev): bump rubocop-rspec from 3.6.0 to 3.7.0
    PR: cloudfoundry/cloud_controller_ng#4541
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

- build(deps): bump newrelic_rpm from 9.20.0 to 9.21.0
    PR: cloudfoundry/cloud_controller_ng#4538
    Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: ari-wg-gitbot