Build and Tests

Update CI matrix and GitHub Actions versions #300

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Run time

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Job	Run time
Generate job matrix	6s
Linux GCC C++20	5m 34s
macOS apple-clang C++17 Debug	4m 14s
Linux GCC C++17 Debug	3m 30s
Linux Clang C++17 Debug	5m 11s
macOS apple-clang C++20	6m 22s
Windows C++20	12m 9s
Linux Clang C++20	7m 36s
Windows C++17	9m 8s
Linux Clang C++17	5m 54s
macOS apple-clang C++17	4m 3s
Linux GCC C++17	4m 22s
Windows C++17 Debug	8m 24s
	1h 16m 33s