CMake

Port away from deprecated API in Qt 6.6: QColor::setNamedColor #97

Job	Run time
build (ubuntu-latest, Debug, static, 5.12, x86_64)	1m 7s
build (ubuntu-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 8s
build (ubuntu-latest, Debug, shared, 5.12, x86_64)	57s
build (ubuntu-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 31s
build (ubuntu-latest, Release, static, 5.12, x86_64)	42s
build (ubuntu-latest, Release, static, 6.6.0, x86_64;arm64)	1m 37s
build (ubuntu-latest, Release, shared, 5.12, x86_64)	48s
build (ubuntu-latest, Release, shared, 6.6.0, x86_64;arm64)	58s
build (windows-latest, Debug, static, 5.12, x86_64)	1m 13s
build (windows-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 47s
build (windows-latest, Debug, shared, 5.12, x86_64)	1m 55s
build (windows-latest, Debug, shared, 6.6.0, x86_64;arm64)	3m 48s
build (windows-latest, Release, static, 5.12, x86_64)	2m 6s
build (windows-latest, Release, static, 6.6.0, x86_64;arm64)	1m 54s
build (windows-latest, Release, shared, 5.12, x86_64)	1m 30s
build (windows-latest, Release, shared, 6.6.0, x86_64;arm64)	2m 41s
build (macos-latest, Debug, static, 5.12, x86_64)	44s
build (macos-latest, Debug, static, 6.6.0, x86_64;arm64)	1m 56s
build (macos-latest, Debug, shared, 5.12, x86_64)	41s
build (macos-latest, Debug, shared, 6.6.0, x86_64;arm64)	1m 28s
build (macos-latest, Release, static, 5.12, x86_64)	46s
build (macos-latest, Release, static, 6.6.0, x86_64;arm64)	1m 32s
build (macos-latest, Release, shared, 5.12, x86_64)	35s
build (macos-latest, Release, shared, 6.6.0, x86_64;arm64)	1m 31s
	34m 55s

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