ParamFutureWarning: The 'class_' attribute on 'List' is deprecated.

Some warning appear on serverish depended programs run:

```
/home/poweruser/.cache/pypoetry/virtualenvs/oca-fits-proc-ra1OpwlD-py3.10/lib/python3.10/site-packages/serverish/connection/connection_jets.py:25: ParamFutureWarning: The 'class_' attribute on 'List' is deprecated. Use instead 'item_type'
  declared_subjects = param.List(default=[], class_=str,
```