chore(deps): Update Terraform terraform-google-modules/project-factory/google to v15 (#137)

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

Author: renovate[bot]

test/setup/main.tf

@@ -16,7 +16,7 @@
 
 module "project" {
   source  = "terraform-google-modules/project-factory/google"
-  version = "~> 14.0"
+  version = "~> 15.0"
 
   name              = "ci-composer"
   random_project_id = "true"
@@ -46,7 +46,7 @@ module "project" {
 
 module "service_project" {
   source  = "terraform-google-modules/project-factory/google"
-  version = "~> 14.0"
+  version = "~> 15.0"
 
   name              = "ci-composer-service"
   random_project_id = "true"