message: update for SubscriptionPriceData
diff: @@ -160,11 +160,13 @@ pub use {
  subscription_item::*,
  subscription_item::PlanInterval as SubscriptionItemInterval,
  subscription_item::SubscriptionItemPriceDataRecurring as SubscriptionItemPriceDataRecurring,
  + subscription_item::SubscriptionItemPriceData as SubscriptionItemPriceData,
  // need to import this afterwards so that the SubscriptionItemPriceDataRecurring
  // isn't silently ignored
  subscription::*,
  subscription::PlanInterval as SubscriptionInterval,
  subscription::SubscriptionItemPriceDataRecurring as SubscriptionPriceDataRecurring,
  + subscription::SubscriptionItemPriceData as SubscriptionPriceData,
  subscription_schedule::*,
  tax_id::*,
  tax_rate::*,
  