update groovy petstore samples

Author: wing328

samples/client/petstore/groovy/.openapi-generator/FILES

@@ -5,6 +5,8 @@ src/main/groovy/org/openapitools/api/PetApi.groovy
 src/main/groovy/org/openapitools/api/StoreApi.groovy
 src/main/groovy/org/openapitools/api/UserApi.groovy
 src/main/groovy/org/openapitools/model/Category.groovy
+src/main/groovy/org/openapitools/model/InlineObject.groovy
+src/main/groovy/org/openapitools/model/InlineObject1.groovy
 src/main/groovy/org/openapitools/model/ModelApiResponse.groovy
 src/main/groovy/org/openapitools/model/Order.groovy
 src/main/groovy/org/openapitools/model/Pet.groovy