Update Istio to add API NP
Package Owner Merge Request
Package Changes
https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/merge_requests/52
https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/tags/1.8.4-bb.4
Additional Details
This is a necessary cherry pick for 1.12.0
Closes https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/578