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