Update generated code

[stripe-openapi]

Codegen for openapi v878.

Changelog

• Add support for new resources Issuing.PersonalizationDesign and Issuing.PhysicalBundle
• Add support for create, list, retrieve, and update methods on resource PersonalizationDesign
• Add support for list and retrieve methods on resource PhysicalBundle
• Add support for personalization_design on Issuing.CardCreateParams, Issuing.CardListParams, Issuing.CardUpdateParams, and Issuing.Card
• Change type of SubscriptionCreateParams.application_fee_percent and SubscriptionUpdateParams.application_fee_percent from number to emptyStringable(number)
• Add support for sepa_debit on Subscription.payment_settings.payment_method_options, SubscriptionCreateParams.payment_settings.payment_method_options, and SubscriptionUpdateParams.payment_settings.payment_method_options