message: update python version to have extra functionality from dabit3
diff: @@ -58,6 +58,17 @@ class TheSimpleGraphqlServiceStack(core.Stack):
  )
  # Mutation Resolver for updating an existing Customer
  + customer_ds.create_resolver(
  + type_name='Mutation',
  + field_name='saveCustomer',
  + request_mapping_template=appsync.MappingTemplate.dynamo_db_put_item(
  + key=appsync.PrimaryKey.partition('id').is_('id'),
  + values=appsync.Values.projecting('customer')
  + ),
  + response_mapping_template=appsync.MappingTemplate.dynamo_db_result_item()
  + )
  +
  + # Mutation resolver for creating a new customer along with their first order
  customer_ds.create_resolver(
  type_name='Mutation',
  field_name='saveCustomerWithFirstOrder',
  