Adjust `python-version` limits #107

Job	Run time
test (ubuntu-22.04, 5.15.2, r21e, qtbase qtsensors)	2m 14s
test (ubuntu-22.04, 6.3.2, r21e, qtsensors, qtbase, qtsensors)	2m 9s
test (windows-2022, 5.15.2, r21e, qtbase qtsensors)	4m 0s
test (windows-2022, 6.3.2, r21e, qtsensors, qtbase, qtsensors)	2m 32s
test (macos-15, 5.15.2, r21e, qtbase qtsensors)	3m 18s
test (macos-15, 6.3.2, r21e, qtsensors, qtbase, qtsensors)	2m 15s
	16m 28s

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