Upgraded cluster add-ons

The following updates have been rolled out to all non-production clusters. As usual there are also improvements across various other add-ons, ensuring enhanced performance and security:

• amazon-eks-ami v20250715
• aws-ebs-csi-driver v1.46.0-eksbuild.1
• aws-efs-csi-driver v2.1.10
• aws-load-balancer-controller v2.13.4
• aws-vpc-cni v1.20.0-eksbuild.1
• cert-manager v1.18.2
• flux v2.6.4
• karpenter v1.6.1
• kube-prometheus-stack v75.15.1
  • Alertmanager v0.28.1
  • Grafana v12.1.0
  • Prometheus v3.5.0
  • Prometheus Operator v0.83.0
• kube-proxy v1.32.6-eksbuild.2
• loki v3.5.3
• metrics-server v0.8.0-eksbuild.1
• oauth2-proxy v7.11.0
• secrets-store-csi-driver v1.5.3
• secrets-store-csi-driver-provider-aws v2.0.0