devel/shiboken2 build with python-3.11

[Jason E. Hale]

On Mon, Dec 11, 2023 at 2:48 AM wen heping <wenheping2000 at hotmail.com> wrote:
>
> Then we shall set USES=python:3.8-3.11.
> It will help the switch DEFAULT_PYTHON form 3.9 to 3.11.
>
> Would you commit it if you approve it ?
>

I've committed the change in [1]. I didn't do any runtime testing with
Python 3.11, though.

[1] https://cgit.freebsd.org/ports/commit/?id=bfe377d24c6148e442fd0b102b08a3d0131b8adb

- Jason