Resolve jsonrpcclient warning in python tests

[darwintree]

Python would warn jsonrpcclient deprecation warning:

DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
    from pkg_resources import resource_string

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

It can be seen from tests that jsonrpcclient.exceptions and jsonrpcclient.clients module are required. And this module is removed in a higher version of jsonrpcclient.

It should be examined which module relies on jsonrpcclient and if it can be removed or updated