istio update to 1.19.7-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/istio-controlplane/-/blob/1.19.7-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/istio-controlplane!207 (merged)

For Issue

Closes big-bang/product/packages/istio-controlplane#131 (closed)

Upgrade Notices

N/A