Build

Fix build under Qt 6.9 #491

Job	Run time
macOS (latest, 3.9, 5.9.*, debug)	3m 33s
macOS (latest, 3.9, 5.9.*, release)	3m 49s
windows (win64_msvc2017_64, 3.6, x64, 5.11.*)	4m 28s
macOS (latest, 3.11, 5.12.*, debug)	5m 31s
oldschool (rockylinux, 9, release)	4m 15s
ubuntu (22.04)	6m 54s
windows (win64_mingw73, 3.10, 5.12.*, x64)	5m 50s
oldschool (rockylinux, 9, debug)	3m 46s
ubuntu (24.04)	7m 7s
windows (win64_msvc2019_64, 3.13, x64, 5.15.*, PythonQtCore PythonQtGui PythonQtMultimedia)	4m 15s
windows (win32_mingw53, 3.6, x86, 5.11.*)	6m 23s
	55m 51s

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