Manually update ARM resource & SHA values in hardening_manifest.yaml.

This MR contains the following updates:

Package	Type	Update	Change
istio/install-cni		patch	1.25.4 -> 1.25.5
istio/install-cni	ironbank-docker	patch	1.25.4-distroless -> 1.25.5-distroless
istio/install-cni	stage	patch	1.25.4-distroless -> 1.25.5-distroless

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