Stripe: Update type for Product (#40215)

* Update type for Product

As per https://stripe.com/docs/api/service_products/create#create_service_product-type

* Version bump

types/stripe/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for stripe 7.10
+// Type definitions for stripe 7.11
 // Project: https://github.com/stripe/stripe-node/
 // Definitions by: William Johnston <https://github.com/wjohnsto>
 //                 Peter Harris <https://github.com/codeanimal>
@@ -7028,10 +7028,11 @@ declare namespace Stripe {
             statement_descriptor: string;
 
             /**
-             * The type of the product. The product is either of type good, which is eligible for use with Orders and SKUs, or service, which is eligible for
-             * use with Subscriptions and Plans.
+             * The type of the product. Defaults to `service` if not explicitly specified, enabling use of this product
+             * withSubscriptions and Plans. Set this parameter to `good` to use this product with Orders and SKUs. On API
+             * versions before `2018-02-05`, this field defaults to `good` for compatibility reasons.
              */
-            type: ProductType;
+            type?: ProductType;
 
             /**
              * A label that represents units of this product, such as seat(s), in Stripe and on customers’ receipts and invoices.