Changes to Update an order subscription

added the optional property data/relationships/resource_errors to the response with the 200 status

added the new pending enum value to the data/attributes/status response property for the response status 200

request property data/type was restricted to a list of enum values

added the new optional request property data/attributes/_add_tags

added the new optional request property data/attributes/_convert

added the new optional request property data/attributes/_remove_tags

added the new optional request property data/attributes/activate_by_source_order

added the new optional request property data/attributes/frequency

added the new optional request property data/attributes/next_run_at

added the new optional request property data/attributes/options

added the new optional request property data/attributes/place_target_order

added the new optional request property data/attributes/renewal_alert_period

added the new optional request property data/relationships/customer_payment_source

added the new optional request property data/relationships/tags

the request property data/attributes/expires_at became nullable

the request property data/attributes/metadata became nullable

the request property data/attributes/reference became nullable

the request property data/attributes/reference_origin became nullable

the type request property default value order_subscriptions was removed

added the new order_subscriptions enum value to the request property data/type

added the media type application/vnd.api+json for the response with the status 200