Attribute error (no attributed CacherNode) when trying to run DistributedDQN

When trying to run '[agent_distributed_test](https://github.com/deepmind/acme/blob/master/acme/agents/tf/dqn/agent_distributed_test.py).py' an attribute error is raised:

`raise AttributeError(f'module {self._parent!r} has no attribute {name!r}')
AttributeError: module has no attribute 'CacherNode'`

The following libraries are installed:
dm-acme 0.4.1
dm-control 1.0.7
dm-env 1.5
dm-haiku 0.0.8
dm-launchpad 0.5.2
dm-reverb 0.7.2
dm-sonnet 2.0.0
dm-tree 0.1.7
tensorflow 2.8.0

From investigating, the CacherNode was removed [in this commit](https://github.com/deepmind/launchpad/commit/80913e872521ed47a809c9d405b0e70a92fa9f17).