Run internal tests in Cygwin #3198

Job	Run time
windows-mingw-build (32)	1m 5s
windows (32, windows-2019)	5m 20s
windows-mingw-build (64)	1m 1s
unix (ubuntu-20.04, g++, make)	5m 41s
windows (32, windows-2022)	5m 50s
cygwin (32)	4m 20s
windows (64, windows-2019)	4m 45s
unix (ubuntu-20.04, g++, cmake)	5m 45s
cygwin (64)	5m 38s
windows (64, windows-2022)	5m 15s
unix (ubuntu-20.04, clang++, make)	6m 4s
unix (ubuntu-20.04, clang++, cmake)	6m 25s
unix (ubuntu-22.04, g++, make)	6m 2s
unix (ubuntu-22.04, g++, cmake)	6m 28s
macos-static	2m 20s
unix (ubuntu-22.04, clang++, make)	4m 22s
unix (ubuntu-22.04, clang++, cmake)	4m 37s
unix (macos-14, clang++, make)	6m 28s
unix (macos-14, clang++, cmake)	5m 49s
windows-mingw-testing (windows-2019, 32)	3m 54s
windows-mingw-testing (windows-2019, 64)	4m 12s
windows-mingw-testing (windows-2022, 32)	4m 30s
windows-mingw-testing (windows-2022, 64)	4m 12s
	1h 50m 3s

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