Experiment with msys2 ucrt64 environment in CI workflow #224

Job	Run time
build-test (ubuntu-24.04, gcc, amd64)	2m 34s
build-test (ubuntu-24.04, gcc, c)	2m 32s
build-test (ubuntu-24.04, clang, amd64)	2m 33s
build-test (ubuntu-24.04, clang, c)	2m 33s
build-test (ubuntu-24.04, clang, llvm)	2m 32s
build-test (macos-13, clang, amd64)	2m 38s
build-test (macos-13, clang, c)	2m 34s
build-test (macos-13, clang, llvm)	2m 33s
build-test (macos-14, clang, c)	2m 35s
build-test (macos-14, clang, llvm)	2m 35s
build-test (windows-2022, mingw64, gcc, amd64)	53s
build-test (windows-2022, mingw64, gcc, c)	53s
build-test (windows-2022, ucrt64, gcc, amd64)	52s
build-test (windows-2022, ucrt64, gcc, c)	50s
	29m 7s

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