chore(deps): update terraform terraform-aws-modules/eks/aws to v20

Author: renovate[bot]

main.tf

@@ -14,7 +14,7 @@ locals {
 
 module "eks" {
   source  = "terraform-aws-modules/eks/aws"
-  version = "~> 19.13"
+  version = "~> 20.0"
 
   cluster_name    = var.cluster_name
   cluster_version = var.cluster_version