Update generated code (#2291)

* Update generated code for v1642

* Update generated code for v1642

---------

Co-authored-by: Stripe OpenAPI <105521251+stripe-openapi[bot]@users.noreply.github.com>

Author: stripe-openapi[bot]

OPENAPI_VERSION

@@ -1 +1 @@
-v1641
+v1642

types/Invoices.d.ts

@@ -394,8 +394,6 @@ declare module 'stripe' {
 
       status_transitions: Invoice.StatusTransitions;
 
-      subscription?: string | Stripe.Subscription | null;
-
       /**
        * Total of all subscriptions, invoice items, and prorations on the invoice before any invoice level discount or exclusive tax is applied. Item discounts are already incorporated
        */

types/Subscriptions.d.ts

@@ -52,7 +52,7 @@ declare module 'stripe' {
       /**
        * Whether this subscription will (if `status=active`) or did (if `status=canceled`) cancel at the end of the current billing period.
        */
-      cancel_at_period_end: boolean | null;
+      cancel_at_period_end: boolean;
 
       /**
        * If the subscription has been canceled, the date of that cancellation. If the subscription was canceled with `cancel_at_period_end`, `canceled_at` will reflect the time of the most recent update request, not the end of the subscription period when the subscription is automatically moved to a canceled state.