Changes to Retrieve a single CheckoutCustomField.

removed the optional property checkout_custom_field/custom_field_select_options from the response with the 200 status

added the new date enum value to the checkout_custom_field/type response property for the response status 200

added the new selection enum value to the checkout_custom_field/type response property for the response status 200

the security scope read_checkout_custom_fields was added to the endpoint's security scheme OAuth2

the security scope read_settings was removed from the endpoint's security scheme OAuth2

added the optional property checkout_custom_field/app_id to the response with the 200 status

added the optional property checkout_custom_field/checkout_custom_field_select_options to the response with the 200 status

the deletable response's property default value changed from false to true for the status 200

the required response's property default value changed from false to true for the status 200

removed the select enum value from the checkout_custom_field/type response property for the response status 200