Fix Windows only failing unittests #288

Job	Run time
data	1s
compile_glecs (linux, x86_64, libglecs.linux.template_debug.x86_64.so, ubuntu-latest)	29s
compile_glecs (macos, x86_64, libglecs.macos.template_debug.x86_64.dylib, macos-13)	48s
compile_glecs (windows, windows, x86_64, libglecs.windows.template_debug.x86_64.dll, windows-latest)	2m 13s
run_test_suite (ubuntu-latest, bin.linux_x86_64.b57b1796e2c2aa90f04e66a58a9fc1476b6929e3ff9b544a1...	4m 36s
run_test_suite (macos-13, bin.macos_x86_64.d72375d450dfc86cc48c6dfdc9ad4c3925ea10199f92410b233966...	20s
run_test_suite (windows-latest, bin.windows_x86_64.736463843bee14dbba023ae7bb68d84d6f9965505c3564...	5m 19s
update_nightly	1s
	13m 47s

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