Update SupportedBoards.rst #1034

Job	Run time
CppUnix (Release, ubuntu-latest)	7m 26s
CppWindows (static, Release, Win32)	4m 28s
CppUnix (Release, macos-12)	4m 18s
CppWindows (static, Release, x64)	4m 17s
CppUnix (Debug, ubuntu-latest)	5m 45s
CppWindows (static, Debug, Win32)	3m 59s
CppUnix (Debug, macos-12)	3m 4s
CppWindows (static, Debug, x64)	3m 13s
CppWindows (dynamic, Release, Win32)	4m 6s
CppWindows (dynamic, Release, x64)	4m 58s
CppWindows (dynamic, Debug, Win32)	3m 53s
CppWindows (dynamic, Debug, x64)	3m 39s
	53m 6s

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