Subscription schedule phase prorationBehavior missing case

[andrew804]

Environment:
Xcode 15.3
Swift 5.10.0
vapor 4.55.4
stripe-kit 24.0.0
Stripe API 2023-08-16

---

I have an issue creating / updating a subscription schedule with a phase with a prorationBehavior of case always_invoice. This is because the SubscriptionSchedulePhase.prorationBehavior enum is missing the always_invoice case.

From the docs:
"enum. always_invoice / create_prorations / none"

https://docs.stripe.com/api/subscription_schedules/update#update_subscription_schedule-phases-proration_behavior

Here's an example updating a subscription schedule's phases:

let _ = try await req.stripe.subscriptionSchedules
.update(
  schedule: schedule.id,
  metadata: nil,
  phases: [
    [ 
      "items": [["price": priceID]],
      "proration_behavior": SubscriptionProrationBehavior.alwaysInvoice.rawValue,  // MISSING CASE
      "start_date": Int(nextBillDate.timeIntervalSince1970),
      ],
    ],
  prorationBehavior: nil,
  defaultSettings: nil,
  endBehavior: .release,
  expand: nil
)