Log Message:
py-blinker: update to 1.9.0.

Version 1.9.0
-------------

Released 2024-11-08

-   Drop support for Python 3.8. :pr:`175`
-   Remove previously deprecated ``__version__``, ``receiver_connected``,
    ``Signal.temporarily_connected_to`` and ``WeakNamespace``. :pr:`172`
-   Skip weakref signal cleanup if the interpreter is shutting down.
    :issue:`173`