PXD-2435 ⁃ update to latest EKS + AMI + CNI + t3 node type

[philloooo]

update to latest EKS + AMI + CNI + t3 node type

• https://github.com/aws/amazon-vpc-cni-k8s/releases
• https://github.com/awslabs/amazon-eks-ami/issues/27
• https://docs.aws.amazon.com/eks/latest/userguide/eks-optimized-ami.html
• https://docs.aws.amazon.com/eks/latest/userguide/platform-versions.html
• https://www.zdnet.com/article/kubernetes-first-major-security-hole-discovered/
• https://aws.amazon.com/ec2/instance-types/