istioOperator & istio update to 1.19.5-bb.0

Package Merge Request

• Updated repo1 image to 1.19.5

Package MR

big-bang/product/packages/istio-operator!101 (merged)

big-bang/product/packages/istio-controlplane!193 (merged)

For Issue

Closes big-bang/product/packages/istio-operator#60 (closed)

Closes big-bang/product/packages/istio-controlplane#121 (closed)

Upgrade Notices

• Istio gets updated to 1.19.5. BigBang apps should automatically cycle to get the latest sidecar config and version. Be sure to cycle pods for any community or tenant applications manually.