Renovate: Upgrade Istio Control Plane Package Dependencies

• Sync upstream helm chart version with updated dependencies.

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• Update Ironbank to v1.19.4 (registry1.dso.mil/ironbank/opensource/istio/install-cni, registry1.dso.mil/ironbank/opensource/istio/pilot, registry1.dso.mil/ironbank/opensource/istio/proxyv2)