chore(deps): Update Terraform terraform-google-modules/network/google to v18

Author: renovate[bot]

test/setup/main.tf

@@ -51,7 +51,7 @@ module "project_ci" {
 
 module "svpc" {
   source          = "terraform-google-modules/network/google"
-  version         = "~> 10.0"
+  version         = "~> 18.0"
   project_id      = module.project_ci.project_id
   network_name    = var.network_name
   shared_vpc_host = true