feat: add Cross App Access and Identity Assertion grants, Branding Theme Identifiers, and Session actor

[fern-api]

Changes

SDK regeneration from the Auth0 OpenAPI spec via Fern. Adds Cross App Access resource-app and Identity Assertion authorization-grant configuration on connections and clients, Branding Theme identifier display settings, session actor metadata, third-party client access on self-service SSO tickets, and two new enum members.

✏️ Modified endpoints (new types):

• Cross App Access resource app - cross_app_access_resource_app on connection create/update request and OIDC response, backed by CrossAppAccessResourceApp, CreateCrossAppAccessResourceApp, UpdateCrossAppAccessResourceApp, and ConnectionCrossAppAccessResourceApp types with the CrossAppAccessResourceAppStatusEnum (enabled/disabled) status enum
• Identity Assertion Authorization Grant - identity_assertion_authorization_grant on client create/update/response, backed by IdentityAssertionAuthorizationGrant, CreateIdentityAssertionAuthorizationGrant, and UpdateIdentityAssertionAuthorizationGrant types
• Third-party client access config - third_party_client_access_config on the self-service profile SSO ticket create, backed by ThirdPartyClientAccessConfig
• Session actor metadata - actor on session get/update response, backed by SessionActorMetadata and the SessionActorClaimValue union
• Branding Theme Identifiers - identifiers on branding theme create/update/response, backed by BrandingThemeIdentifiers with BrandingThemeIdentifiersLoginDisplayEnum, BrandingThemeIdentifiersPhoneDisplay, BrandingThemeIdentifiersPhoneDisplayFormattingEnum, and BrandingThemeIdentifiersPhoneDisplayMaskingEnum

✏️ Modified endpoints (new properties):

• B2B Integration app type - b2b_integration member on ClientAppTypeEnum
• Anonymous user grant subject - anonymous_user member on ClientGrantSubjectTypeEnum

References

N/A

Testing

Existing wire tests were regenerated to match the updated client. The live-tenant integration test passes against a dev tenant, and the new types load correctly.

• This change adds unit test coverage
• This change has been tested on the latest version of Ruby

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors
• Rubocop passes on all added/modified files
• All active GitHub checks have passed