add allOf ref

this prevents the Gatsby build from breaking. Not sure if it makes
sense to add it back in.

Author: leslitagordita

openapi.yaml

@@ -566,7 +566,8 @@ paths:
         content:
           application/json:
             schema:
-              $ref: '#/components/schemas/CreditCard'
+              allOf:
+              - $ref: '#/components/schemas/CreditCard'
       responses:
         '200':
           description: Credit Card updated.