chore(deps): update tf modules (terraform-google-modules#1624)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

examples/acm-terraform-blog-part1/terraform/gke.tf

@@ -31,7 +31,7 @@ module "enabled_google_apis" {
 
 module "gke" {
   source             = "terraform-google-modules/kubernetes-engine/google"
-  version            = "~> 25.0"
+  version            = "~> 26.0"
   project_id         = module.enabled_google_apis.project_id
   name               = "sfl-acm-part1"
   region             = var.region

examples/acm-terraform-blog-part2/terraform/gke.tf

@@ -31,7 +31,7 @@ module "enabled_google_apis" {
 
 module "gke" {
   source             = "terraform-google-modules/kubernetes-engine/google"
-  version            = "~> 25.0"
+  version            = "~> 26.0"
   project_id         = module.enabled_google_apis.project_id
   name               = "sfl-acm-part2"
   region             = var.region

examples/acm-terraform-blog-part3/terraform/gke.tf

@@ -33,7 +33,7 @@ module "enabled_google_apis" {
 
 module "gke" {
   source             = "terraform-google-modules/kubernetes-engine/google//modules/beta-public-cluster"
-  version            = "~> 25.0"
+  version            = "~> 26.0"
   project_id         = module.enabled_google_apis.project_id
   name               = "sfl-acm-part3"
   region             = var.region
@@ -48,7 +48,7 @@ module "gke" {
 
 module "wi" {
   source              = "terraform-google-modules/kubernetes-engine/google//modules/workload-identity"
-  version             = "~> 25.0"
+  version             = "~> 26.0"
   gcp_sa_name         = "cnrmsa"
   cluster_name        = module.gke.name
   name                = "cnrm-controller-manager"

examples/safer_cluster_iap_bastion/network.tf

@@ -49,7 +49,7 @@ module "vpc" {
 
 module "cloud-nat" {
   source        = "terraform-google-modules/cloud-nat/google"
-  version       = "~> 2.0"
+  version       = "~> 3.0"
   project_id    = module.enabled_google_apis.project_id
   region        = var.region
   router        = "safer-router"