aks: Release 2025-10-12

AKS release 2025-10-12 announces OS retirements and upgrades, new billing for AKS Automatic, LTS patch releases, feature additions (GPU skip drivers, Envoy filters for Istio, VPA mode), behavioral changes to autoscaling and node provisioning, and multiple component and image updates across Azure Linux and Ubuntu node images and CSI/CNI/monitoring components.

• Source: Release notes from AKS