chore(deps): Update Terraform terraform-google-modules/kubernetes-engine/google to v28 (#169)

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

Author: renovate[bot]

examples/kubectl_wrapper_example/main.tf

@@ -65,7 +65,7 @@ module "gcp-network" {
 
 module "gke" {
   source                 = "terraform-google-modules/kubernetes-engine/google"
-  version                = "~> 27.0"
+  version                = "~> 28.0"
   project_id             = module.enabled_google_apis.project_id
   name                   = var.cluster_name
   regional               = true