Log Message:
py-matplotlib: update to 3.9.1.

This is the first bugfix release of the 3.9.x series.

This release contains several bug-fixes and adjustments:

    Add GitHub artifact attestations for sdist and wheels
    Re-add matplotlib.cm.get_cmap; note this function will still be removed at a \ 
later date
    Allow duplicate backend entry points
    Fix Axes autoscaling of thin bars at large locations
    Fix Axes autoscaling with axhspan / axvspan
    Fix Axes3D autoscaling of Line3DCollection / Poly3DCollection
    Fix Axes3D mouse interactivity with non-default roll angle
    Fix box aspect ratios in Axes3D with alternate vertical axis
    Fix case handling of backends specified as module://...
    Fix crash with TkAgg on Windows with tk.window_focus: True
    Fix interactive update of SubFigures
    Fix interactivity when using the IPython console
    Fix pickling of AxesWidgets and SubFigures
    Fix scaling on GTK3Cairo / GTK4Cairo backends
    Fix text wrapping within SubFigures
    Promote mpltype Sphinx role to a public extension; note this is only \ 
intended for development reasons