[FEATURE] Update WorkflowState resources during deprovisioning

[dbwiddis]

Is your feature request related to a problem?

Because WorkflowState updates have only been additive, the Deprovisioning workflow only updates once at the end of deprovisioning with a "remaining resources" list. There is no check whether this was successful (see #691) and no concurrency guarantees.

What solution would you like?

Following implementation of #779, use the iterative update to remove resources from the resource list as they are deprovisioned, so the final result will not be sent until the state updates were all completed.