chore(deps): update terraform aws modules

| datasource       | package                       | from    | to      |
| ---------------- | ----------------------------- | ------- | ------- |
| terraform-module | terraform-aws-modules/eks/aws | 19.21.0 | 20.13.0 |
| terraform-module | terraform-aws-modules/iam/aws | 5.34.0  | 5.39.1  |
| terraform-module | terraform-aws-modules/vpc/aws | 5.5.2   | 5.8.1   |

modules/eks-cluster/cluster.tf

@@ -33,7 +33,7 @@ provider "kubernetes" {
 # https://github.com/terraform-aws-modules/terraform-aws-eks
 module "eks" {
   source  = "terraform-aws-modules/eks/aws"
-  version = "19.21.0"
+  version = "20.13.0"
 
   cluster_name                    = var.name
   cluster_version                 = var.kubernetes_version

modules/eks-cluster/iam.tf

@@ -5,7 +5,7 @@
 
 module "ebs_cs_role" {
   source  = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
-  version = "5.34.0"
+  version = "5.39.1"
 
   role_name = "${var.name}-ebs-cs-role"
 
@@ -25,7 +25,7 @@ module "ebs_cs_role" {
 # Following role allows cert-manager to do the DNS01 challenge
 module "cert_manager_role" {
   source  = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
-  version = "5.34.0"
+  version = "5.39.1"
 
   role_name = "${var.name}-cert-manager-role"
 
@@ -44,7 +44,7 @@ module "cert_manager_role" {
 # Following role allows external-dns to adjust values in hosted zones
 module "external_dns_role" {
   source  = "terraform-aws-modules/iam/aws//modules/iam-role-for-service-accounts-eks"
-  version = "5.34.0"
+  version = "5.39.1"
 
   role_name = "${var.name}-external-dns-role"
 

modules/eks-cluster/vpc.tf

@@ -4,7 +4,7 @@ locals {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "5.5.2"
+  version = "5.8.1"
 
   name = local.vpc_name
   # requires a /16 range, resulting in 2 leftover subnets, which can be used for DBs