Test Python 3.13

[hugovk]

Pending CFFI support for 3.13, should be available in CFFI 1.17.0 soonish:

• 1.17.0 final release checklist python-cffi/cffi#105

[hugovk]

CFFI 1.17.0 is out with support for Python 3.13:

https://github.com/python-cffi/cffi/releases/tag/v1.17.0

But there's another error:

__________________ ERROR at teardown of test_get_installation __________________
cls = <class '_pytest.runner.CallInfo'>
func = <function call_and_report.<locals>.<lambda> at 0x7fc9c7d13a60>
when = 'teardown'
reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
    @classmethod
    def from_call(
        cls,
        func: Callable[[], TResult],
        when: Literal["collect", "setup", "call", "teardown"],
        reraise: type[BaseException] | tuple[type[BaseException], ...] | None = None,
    ) -> CallInfo[TResult]:
        """Call func, wrapping the result in a CallInfo.
    
        :param func:
            The function to call. Called without arguments.
        :type func: Callable[[], _pytest.runner.TResult]
        :param when:
            The phase in which the function is called.
        :param reraise:
            Exception or exceptions that shall propagate if raised by the
            function, instead of being wrapped in the CallInfo.
        """
        excinfo = None
        start = timing.time()
        precise_start = timing.perf_counter()
        try:
>           result: TResult | None = func()
.tox/py/lib/python3.13/site-packages/_pytest/runner.py:341: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.tox/py/lib/python3.13/site-packages/_pytest/runner.py:242: in <lambda>
    lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
.tox/py/lib/python3.13/site-packages/pluggy/_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
.tox/py/lib/python3.13/site-packages/pluggy/_manager.py:120: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
.tox/py/lib/python3.13/site-packages/_pytest/threadexception.py:97: in pytest_runtest_teardown
    yield from thread_exception_runtest_hook()
.tox/py/lib/python3.13/site-packages/_pytest/threadexception.py:68: in thread_exception_runtest_hook
    yield
.tox/py/lib/python3.13/site-packages/_pytest/unraisableexception.py:100: in pytest_runtest_teardown
    yield from unraisable_exception_runtest_hook()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    def unraisable_exception_runtest_hook() -> Generator[None, None, None]:
        with catch_unraisable_exception() as cm:
            try:
                yield
            finally:
                if cm.unraisable:
                    if cm.unraisable.err_msg is not None:
                        err_msg = cm.unraisable.err_msg
                    else:
                        err_msg = "Exception ignored in"
                    msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
                    msg += "".join(
                        traceback.format_exception(
                            cm.unraisable.exc_type,
                            cm.unraisable.exc_value,
                            cm.unraisable.exc_traceback,
                        )
                    )
>                   warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
E                   pytest.PytestUnraisableExceptionWarning: Exception ignored in: <async_generator object FakeGH.getiter at 0x7fc9c71d6880>
E                   
E                   Traceback (most recent call last):
E                     File "/opt/hostedtoolcache/Python/3.13.0-rc.1/x64/lib/python3.13/asyncio/base_events.py", line 746, in close
E                       self._ready.clear()
E                       ~~~~~~~~~~~~~~~~~^^
E                   RuntimeWarning: coroutine method 'aclose' of 'FakeGH.getiter' was never awaited
.tox/py/lib/python3.13/site-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning
---------------------------- Captured log teardown -----------------------------
ERROR    asyncio:base_events.py:[185](https://github.com/python/blurb_it/actions/runs/10238535785/job/28423117830?pr=401#step:5:186)8 Task was destroyed but it is pending!
task: <Task pending name='Task-9' coro=<<async_generator_athrow without __name__>()>>