Fix type (again)

upstream doesn't have this, but apply fails without it 🤷 

Signed-off-by: Ben Poland <24273909+bpoland@users.noreply.github.com>

modules/extensions/autoscaler.tf

@@ -67,6 +67,7 @@ data "helm_template" "cluster_autoscaler" {
     iterator = helm_value
     content {
       name  = helm_value.key
+      type  = "string"
       value = helm_value.value
     }
   }