Patch the swarm with changes and then trigger the swarm.

def dispatch(self, **changes):
        """
        Patch the swarm with changes and then trigger the swarm.
        """
        self.patch(**changes)
        trigger_url = self._vr._build_url(self.resource_uri, 'swarm/')
        resp = self._vr.session.post(trigger_url)
        resp.raise_for_status()
        try:
            return resp.json()
        except ValueError:
            return None