Update generated code for beta

[stripe-openapi[bot]]

Codegen for openapi v972.

Changelog

• Add support for capital_overview, tax_registrations, and tax_settings on AccountSessionCreateParams.components
• Add support for external_account_collection on AccountSessionCreateParams.components.financial_account.features
• Add support for subscription_trial_from_plan on InvoiceUpcomingLinesParams and InvoiceUpcomingParams