tests: fix compatibility with pytest 9.1.0

[parthea]

This PR fixes a compatibility issue with pytest==9.1.0. See https://docs.pytest.org/en/stable/deprecations.html#non-collection-iterables-in-pytest-mark-parametrize

See the stack trace below which appears without the fix

________________________________________________________________________________________________________ ERROR collecting tests/unit/test_python_version_support.py ________________________________________________________________________________________________________
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_hooks.py:512: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_callers.py:53: in run_old_style_hookwrapper
    return result.get_result()
           ^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/pytest_asyncio/plugin.py:701: in pytest_pycollect_makeitem_convert_async_functions_to_subclass
    ) = hook_result.get_result()
        ^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_callers.py:38: in run_old_style_hookwrapper
    res = yield
          ^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/_pytest/python.py:250: in pytest_pycollect_makeitem
    return list(collector._genfunctions(name, obj))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/_pytest/python.py:476: in _genfunctions
    self.ihook.pytest_generate_tests.call_extra(methods, dict(metafunc=metafunc))
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_hooks.py:573: in call_extra
    return self._hookexec(self.name, hookimpls, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.nox/97a4db2a/lib/python3.14/site-packages/_pytest/python.py:124: in pytest_generate_tests
    metafunc.parametrize(*marker.args, **marker.kwargs, _param_mark=marker)
.nox/97a4db2a/lib/python3.14/site-packages/_pytest/python.py:1316: in parametrize
    argnames, parametersets = ParameterSet._for_parametrize(
.nox/97a4db2a/lib/python3.14/site-packages/_pytest/mark/structures.py:203: in _for_parametrize
    warnings.warn(
E   pytest.PytestRemovedIn10Warning: Passing a non-Collection iterable to parametrize is deprecated.
E   Test: tests/unit/test_python_version_support.py::test_all_tracked_versions_and_date_scenarios, argvalues type: generator
E   Please convert to a list or tuple.
E   See https://docs.pytest.org/en/stable/deprecations.html#parametrize-iterators

[gemini-code-assist]

Code Review

This pull request refactors the generate_tracked_version_test_cases function in test_python_version_support.py to return a list of test parameters instead of yielding them. The review comments correctly point out that several added inline comments are redundant and should be removed to comply with PEP 8 guidelines.

[chalmerlowe]

LGTM, one NIT.