chore(deps): Update Terraform terraform-google-modules/project-factory/google to v18 (#167)

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

Author: renovate[bot]

test/setup/main.tf

@@ -27,7 +27,7 @@ resource "google_folder" "test_folder" {
 
 module "project_ci_kms" {
   source  = "terraform-google-modules/project-factory/google"
-  version = "~> 17.0"
+  version = "~> 18.0"
 
   name              = "ci-kms-module"
   random_project_id = "true"
@@ -53,7 +53,7 @@ module "project_ci_kms" {
 
 module "autokey_resource_project" {
   source  = "terraform-google-modules/project-factory/google"
-  version = "~> 17.0"
+  version = "~> 18.0"
 
   name              = "autokey-resource"
   random_project_id = "true"