Build for Qt6 by default #132

Job	Run time
build (ubuntu-22.04, Debug, static, 5.15)	1m 12s
build (ubuntu-22.04, Debug, static, 6.6.0)	1m 27s
build (ubuntu-22.04, Debug, dynamic, 5.15)	1m 17s
build (ubuntu-22.04, Debug, dynamic, 6.6.0)	1m 32s
build (ubuntu-22.04, Release, static, 5.15)	56s
build (ubuntu-22.04, Release, static, 6.6.0)	56s
build (ubuntu-22.04, Release, dynamic, 5.15)	43s
build (ubuntu-22.04, Release, dynamic, 6.6.0)	1m 3s
build (windows-2022, Debug, static, 5.15)	3m 3s
build (windows-2022, Debug, static, 6.6.0)	3m 6s
build (windows-2022, Debug, dynamic, 5.15)	3m 22s
build (windows-2022, Debug, dynamic, 6.6.0)	3m 8s
build (windows-2022, Release, static, 5.15)	2m 26s
build (windows-2022, Release, static, 6.6.0)	2m 38s
build (windows-2022, Release, dynamic, 5.15)	4m 24s
build (windows-2022, Release, dynamic, 6.6.0)	1m 45s
build (macos-13, Debug, static, 5.15)	1m 47s
build (macos-13, Debug, static, 6.6.0)	2m 58s
build (macos-13, Debug, dynamic, 5.15)	4m 23s
build (macos-13, Debug, dynamic, 6.6.0)	2m 43s
build (macos-13, Release, static, 5.15)	1m 35s
build (macos-13, Release, static, 6.6.0)	1m 44s
build (macos-13, Release, dynamic, 5.15)	1m 14s
build (macos-13, Release, dynamic, 6.6.0)	2m 19s
build (ubuntu-22.04, Release, dynamic, 6.6.0, llvm, shiboken6-generator==6.6.0 pyside6==6.6.0)	1m 36s
	53m 17s

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