Fix Windows build and runtime on Python 3.11.4 #292

Job	Run time
Test with Python 3.8 and wxPython 4.1.1	3m 18s
Test with Python 3.8 and wxPython 4.1.1	3m 18s
Test with Python 3.8 and wxPython 4.2.1	3m 24s
Test with Python 3.8 and wxPython 4.2.1	3m 24s
Test with Python 3.9 and wxPython 4.1.1	3m 19s
Test with Python 3.9 and wxPython 4.1.1	3m 19s
Test with Python 3.9 and wxPython 4.2.1	1m 56s
Test with Python 3.9 and wxPython 4.2.1	3m 17s
Test with Python 3.10 and wxPython 4.1.1	3m 53s
Test with Python 3.10 and wxPython 4.1.1	3m 53s
Test with Python 3.10 and wxPython 4.2.1	1m 58s
Test with Python 3.10 and wxPython 4.2.1	3m 31s
Test with Python 3.11 and wxPython 4.2.1	2m 0s
Test with Python 3.11 and wxPython 4.2.1	3m 14s
	43m 44s

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