docs: def update_user(self, auth, username, update):
          """
          Updates the user with username ``username`` according to ``update``.
  
          :param auth.Authentication auth: authentication object, must be admin-level
          :param str username: username of user to update
          :param GogsUserUpdate update: a ``GogsUserUpdate`` object describing the requested update
          :return: the updated user
          :rtype: GogsUser
          :raises NetworkFailure: if there is an error communicating with the server
          :raises ApiFailure: if the request cannot be serviced
          """
          path = "/admin/users/{}".format(username)
          response = self.patch(path, auth=auth, data=update.as_dict())
          return GogsUser.from_json(response.json())