Update generated code

[stripe-openapi[bot]]

Codegen for openapi v896.

Changelog

• Add support for new resources ConfirmationToken and Forwarding.Request
• Add support for retrieve method on resource ConfirmationToken
• Add support for all, create, and retrieve methods on resource Request
• Add support for new values forwarding_api_inactive, forwarding_api_invalid_parameter, forwarding_api_upstream_connection_error, and forwarding_api_upstream_connection_timeout on enum StripeError.code
• Add support for mobilepay on PaymentMethod
• Add support for new value mobilepay on enum PaymentMethod.type
• Add support for name on Terminal.Configuration