Changes to Upsert feature for billing product

the response property data/flags/items/default_value became nullable for the status 201

the response property data/flags/items/default_value became optional for the status 201

the request property flag/default_value became nullable

the request property flag/default_value became optional

request property flag/default_value deprecated

response property data/flags/items/default_value deprecated

added the new optional request property event_source

added the required property data/event_source to the response with the 201 status

added the required property data/flags/items/feature/event_source to the response with the 201 status

added the optional property data/flags/items/rules/items/condition_groups/items/conditions/items/plan_versions to the response with the 201 status

added the optional property data/flags/items/rules/items/conditions/items/plan_versions to the response with the 201 status

added the new license enum value to the data/feature_type response property for the response status 201

added the new license enum value to the data/flags/items/feature/feature_type response property for the response status 201

added the new license enum value to the request property feature_type

added the optional property data/billing_product to the response with the 201 status

added the optional property data/flags/items/feature/license_id to the response with the 201 status

added the optional property data/flags/items/feature/usage_limit_trait_id to the response with the 201 status

added the optional property data/license_id to the response with the 201 status

added the optional property data/usage_limit_trait_id to the response with the 201 status

added the new custom_plans_edit enum value to the data/flags/items/maintainer/permissions/additionalProperties/items response property for the response status 201

added the new custom_plans_edit enum value to the data/maintainer/permissions/additionalProperties/items response property for the response status 201

removed the billing_credits_edit enum value from the data/flags/items/maintainer/permissions/additionalProperties/items response property for the response status 201

removed the billing_credits_edit enum value from the data/maintainer/permissions/additionalProperties/items response property for the response status 201

added the new metronome enum value to the data/billing_linked_resource/billing_provider response property for the response status 201

added the new metronome enum value to the data/billing_linked_resource/originator response property for the response status 201

added the new metronome enum value to the request property billing_provider

added the optional property data/flags/items/maintainer/first_name to the response with the 201 status

added the optional property data/flags/items/maintainer/last_name to the response with the 201 status

added the optional property data/maintainer/first_name to the response with the 201 status

added the optional property data/maintainer/last_name to the response with the 201 status