Chore(deps): bump terraform-google-modules/iam/google

Bumps [terraform-google-modules/iam/google](https://github.com/terraform-google-modules/terraform-google-iam) from 7.7.1 to 8.0.0.
- [Release notes](https://github.com/terraform-google-modules/terraform-google-iam/releases)
- [Changelog](https://github.com/terraform-google-modules/terraform-google-iam/blob/master/CHANGELOG.md)
- [Commits](terraform-google-modules/terraform-google-iam@v7.7.1...v8.0.0)

---
updated-dependencies:
- dependency-name: terraform-google-modules/iam/google
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

main.tf

@@ -149,7 +149,7 @@ locals {
 # granted this role.
 module "role" {
   source       = "terraform-google-modules/iam/google//modules/custom_role_iam"
-  version      = "7.7.1"
+  version      = "8.0.0"
   target_level = var.target_type
   target_id    = var.target_id
   role_id      = coalesce(var.id, format("%s_%s", var.random_id_prefix, random_id.role_id.hex))