Warnings from unit test runs

[zdc217]

Unit tests give the following warnings after running:

.test.venv/lib/python3.12/site-packages/_pytest/python.py:124
  /home/runner/work/vcrpy-cleaner/vcrpy-cleaner/.test.venv/lib/python3.12/site-packages/_pytest/python.py:124: PytestRemovedIn10Warning: Passing a non-Collection iterable to parametrize is deprecated.
  Test: tests/test_env_string.py::test_env_unset, argvalues type: generator
  Please convert to a list or tuple.
  See https://docs.pytest.org/en/stable/deprecations.html#parametrize-iterators
    metafunc.parametrize(*marker.args, **marker.kwargs, _param_mark=marker)

tests/test_jwt_token.py::test_clean_token
  /home/runner/work/vcrpy-cleaner/vcrpy-cleaner/.test.venv/lib/python3.12/site-packages/jwt/api_jwt.py:147: InsecureKeyLengthWarning: The HMAC key is 5 bytes long, which is below the minimum recommended length of 32 bytes for SHA256. See RFC 7518 Section 3.2.
    return self._jws.encode(

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