Bump terraform-aws-modules/eks-pod-identity/aws to 2.8.0 for K8s 1.35

Update all four pod-identity module blocks (cluster_autoscaler,
aws_lb_controller, aws_ebs_csi, aws_vpc_cni) from 1.12.1 to 2.8.0
to support Kubernetes 1.35.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: github-actions[bot]

eks/terraform/modules/cluster-addons/main.tf

@@ -12,7 +12,7 @@ locals {
 
 module "cluster_autoscaler_pod_identity" {
   source  = "terraform-aws-modules/eks-pod-identity/aws"
-  version = "1.12.1"
+  version = "2.8.0"
 
   name               = "${var.cluster_name}-ca"
   policy_name_prefix = "${var.cluster_name}-"
@@ -35,7 +35,7 @@ module "cluster_autoscaler_pod_identity" {
 
 module "aws_lb_controller_pod_identity" {
   source  = "terraform-aws-modules/eks-pod-identity/aws"
-  version = "1.12.1"
+  version = "2.8.0"
 
   name               = "${var.cluster_name}-lbc"
   policy_name_prefix = "${var.cluster_name}-"
@@ -58,7 +58,7 @@ module "aws_lb_controller_pod_identity" {
 
 module "aws_ebs_csi_pod_identity" {
   source  = "terraform-aws-modules/eks-pod-identity/aws"
-  version = "1.12.1"
+  version = "2.8.0"
 
   name               = "${var.cluster_name}-ebs-csi"
   policy_name_prefix = "${var.cluster_name}-"
@@ -80,7 +80,7 @@ module "aws_ebs_csi_pod_identity" {
 
 module "aws_vpc_cni_pod_identity" {
   source  = "terraform-aws-modules/eks-pod-identity/aws"
-  version = "1.12.1"
+  version = "2.8.0"
 
   name               = "${var.cluster_name}-vpc-cni"
   policy_name_prefix = "${var.cluster_name}-"