Log Message:
py-matplotlib: update to 3.9.0.

What's new in Matplotlib 3.9.0 (May 15, 2024)

    Plotting and Annotation improvements
        Axes.inset_axes is no longer experimental
        Legend support for Boxplot
        Percent sign in pie labels auto-escaped with usetex=True
        hatch parameter for stackplot
        Add option to plot only one half of violin plot
        axhline and axhspan on polar axes
        Subplot titles can now be automatically aligned
        axisartist can now be used together with standard Formatters
        Toggle minorticks on Axis
        StrMethodFormatter now respects axes.unicode_minus
    Figure, Axes, and Legend Layout
        Subfigures now have controllable zorders
        Getters for xmargin, ymargin and zmargin
    Mathtext improvements
        mathtext documentation improvements
        mathtext spacing corrections
    Widget Improvements
        Check and Radio Button widgets support clearing
    3D plotting improvements
        Setting 3D axis limits now set the limits exactly
    Other improvements
        BackendRegistry
        Add widths, heights and angles setter to EllipseCollection
        image.interpolation_stage rcParam
        Arrow patch position is now modifiable
        NonUniformImage now has mouseover support