Bump terraform-google-modules/iam/google in /terraform

Bumps [terraform-google-modules/iam/google](/~https://github.com/terraform-google-modules/terraform-google-iam) from 7.5.0 to 7.6.0.
- [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@v7.5.0...v7.6.0)

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

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

terraform/iam.tf

@@ -26,7 +26,7 @@ resource "google_service_account" "tenant_apps_sa" {
 module "project-iam-bindings" {
   for_each = google_service_account.tenant_nodepool_sa
   source   = "terraform-google-modules/iam/google//modules/projects_iam"
-  version  = "7.5.0"
+  version  = "7.6.0"
   projects = [var.project_id]
   mode     = "authoritative"