Changes to List all billing statements

added the new payer-credits enum value to the data/items/groups/items/items/items/payment_method/payment_type response property for the response status 200

added CommerceTotalsResponse-2 to the data/items/groups/items/items/items/totals response property allOf list for the response status 200

removed schemas-CommerceTotalsResponse from the data/items/groups/items/items/items/totals response property allOf list for the response status 200

added schemas-CommerceTotalsResponse to the data/items/groups/items/items/items/totals response property allOf list for the response status 200

removed CommerceTotalsResponse from the data/items/groups/items/items/items/totals response property allOf list for the response status 200

added the optional property data/items/groups/items/items/items/totals to the response with the 200 status

added the required property data/items/totals/base_fee to the response with the 200 status

added the optional property data/items/groups/items/items/items/payer/credits_balance to the response with the 200 status

added the optional property data/items/payer/credits_balance to the response with the 200 status