Improve seconds formatting #140

Job	Run time
linux_clang (ubuntu-latest, Debug)	3m 29s
windows_mingw64 (windows-latest, Debug)	5m 15s
linux_clang (ubuntu-latest, Release)	1m 16s
windows_mingw64 (windows-latest, Release)	2m 44s
linux_gcc_sanitizers	2m 29s
linux_gcc (ubuntu-latest, Debug)	5m 26s
macos_clang (macos-latest, Debug)	4m 22s
linux_gcc (ubuntu-latest, Release)	2m 27s
windows_msvc2022	2m 48s
macos_clang (macos-latest, Release)	1m 36s
linux_gcc_valgrind	1m 10s
	33m 2s

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