Make changes for AWS EKS version 1.30

Check Terraform configuration for the below changes

• All managed Node groups will default to using Amzon Linux 2023 (as default node OS).
• Default EBS class changed to gp3, so use that by default to avoid issues
• Minimum required IAM policy for the Amazon EKS cluster IAM role also requires: "ec2:DescribeAvailabilityZones"
• Check for deprecated api versions for kubernetes and replace them if used anywhere.
• Check the versions of Terraform aws eks module and other modules if they are compatible with the new EKS version
• Check version and upgrade managed Add-ons for EKS cluster(not applicable in our case, we use a helm chart based deployment)

Kubernetes Deprecation API guide: https://kubernetes.io/docs/reference/using-api/deprecation-guide/