Update wxpython requirement from >=4.2.5 to >=4.3.1 in /windows

[dependabot]

Updates the requirements on wxpython to permit the latest version.

Changelog

Sourced from wxpython's changelog.

4.3.1

• 29-Jul-2026

PyPI: https://pypi.python.org/pypi/wxPython/4.3.1 Extras: https://extras.wxPython.org/wxPython4/extras/ Pip: pip install wxPython==4.3.1

This is a quick follow-up release to v4.3.0 to fix a couple of significant bugs.

New and improved in this release:

• Fix setting RPATH to $ORIGIN when building wxWidgets on Linux (fixes wx.richtext import)

• Restore removed wx.propgrid defines

4.3.0

• 27-Jul-2026

PyPI: https://pypi.python.org/pypi/wxPython/4.3.0 Extras: https://extras.wxPython.org/wxPython4/extras/ Pip: pip install wxPython==4.3.0

Starting with this release wxPython has switched to tracking the wxWidgets master branch (version 3.3.x) for the wxWidgets source code, which wxPython is built upon, and which is included in the wxPython source archives.

Do note that the wxWidgets 3.3.x releases are API/ABI unstable, so there may be API changes/instability between wxPython 4.3.x releases.

New and improved in this release:

• Fix wx.svg to work with cython 3.1 generated code.

• Populate wx.svg with _nanosvg enum values

• Bugfix in hypertreelist. Add missing attribute _x_maincol to constructor of TreeListMainWindow.

• Replace md5 with sha256 when validating downloaded waf and doxygen build tools

• Migrate to build with wxWidgets 3.3 branch

• Fix compile warning in ListClass contains methods

• Fix build with setuptools 81+

• Modernize/update documentation theme

• Flatmenu: remove the unnecessary "mcPopupWindow" class used only for MacOS

... (truncated)

Commits

• b84756b Release 4.3.1
• 6aac322 Restore removed wx.propgrid defines
• d8e8606 Fix setting RPATH to $ORIGIN when building wxWidgets on Linux
• be45d35 Expand simple smoketest to import all wxPython extension modules
• 41c9dc7 Release 4.3.0
• 3b3ff01 Merge pull request #2922 from itmo153277/add_art_transfer
• d4b43cf Add missing transfer attributes for SetArtProvider
• 6c7391d Merge pull request #2920 from jmoraleda/fix/buttonpanel-freeze-thaw-imbalance
• efa1c98 Remove support for outdated wxPython version in ButtonPanel
• a68c619 Fix unbalanced Freeze/Thaw in ButtonPanel
• Additional commits viewable in compare view

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