Rename MemberResponse#actionable_error to MemberResponse#error

Author: Michael Buffington

openapi/mx_platform_api.yml

@@ -2023,7 +2023,7 @@ components:
       type: object
     MemberResponse:
       properties:
-        actionable_error:
+        error:
           example: '{\"error_type\": \"MEMBER\", \"error_code\": 1000, \"error_message\": \"This Member has no eligible checking, savings, or money market accounts.\", \"user_message\": \"We could not find any accounts eligible for transfers. Please link a checking or savings account.\", \"locale\": \"en\"}'
           nullable: true
           type: string