chore(deps): Update Terraform terraform-google-modules/vault/google to v8 (#221)

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

Author: renovate[bot]

examples/shared_vpc_internal/main.tf

@@ -48,7 +48,7 @@ resource "google_storage_bucket" "vault" {
 
 module "vault_cluster" {
   source  = "terraform-google-modules/vault/google//modules/cluster"
-  version = "~> 7.0"
+  version = "~> 8.0"
 
   project_id                  = var.service_project_id
   host_project_id             = var.host_project_id

examples/vault-on-gce/main.tf

@@ -21,7 +21,7 @@ provider "google" {
 
 module "vault" {
   source  = "terraform-google-modules/vault/google"
-  version = "~> 7.0"
+  version = "~> 8.0"
 
   project_id = var.project_id
   region     = var.region