Changes to Estimate amounts for a new credit note

request body became required

the estimated_credit_note/precise_coupons_adjustment_amount_cents response's property type changed from number to string for status 200

the estimated_credit_note/precise_taxes_amount_cents response's property type changed from number to string for status 200

added the new SYP enum value to the estimated_credit_note/applied_taxes/items/amount_currency response property for the response status 200

added the new SYP enum value to the estimated_credit_note/currency response property for the response status 200

added the new TND enum value to the estimated_credit_note/applied_taxes/items/amount_currency response property for the response status 200

added the new TND enum value to the estimated_credit_note/currency response property for the response status 200

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 405