fix: Add new ULTRA SKU

breaking: New Enum value added to Organisation Class

Author: MatthewSteeples

xero_accounting.yaml

@@ -22912,6 +22912,7 @@ components:
             - GROW
             - COMPREHENSIVE
             - SIMPLE
+            - ULTRA
         Edition:
           description: BUSINESS or PARTNER. Partner edition organisations are sold exclusively through accounting partners and have restricted functionality (e.g. no access to invoicing)
           type: string