tox
(mypy complains about indeed different signatures on `compute_information` method.
Tests are fine with this.
I'm a bit at a loss on finding out how to make those converge though for now
(or even to make it ignore it).
in this diff:
```
08:16:08 swh/deposit/client.py:484: error: Signature of "compute_information" incompatible with supertype "BaseDepositClient"
08:16:08 swh/deposit/client.py:595: error: Signature of "compute_information" incompatible with supertype "BaseDepositClient"
```