fix(external-backup): after some changes in GCP export methods, new p…

…ermissions are required for exporting dumps

modules/backup/main.tf

@@ -196,7 +196,7 @@ resource "google_storage_bucket_iam_member" "sql_instance_account" {
   count  = var.enable_export_backup ? 1 : 0
   bucket = split("/", var.export_uri)[2] #Get the name of the bucket out of the URI
   member = "serviceAccount:${data.google_sql_database_instance.backup_instance.service_account_email_address}"
-  role   = "roles/storage.objectCreator"
+  role   = "roles/storage.objectAdmin"
 }
 
 # We want to get notified if there hasn't been at least one successful backup in a day