Run internal tests in Cygwin #4117

Job	Run time
windows (32, windows-2019)	5m 43s
windows (32, windows-2022)	6m 44s
windows (64, windows-2019)	5m 2s
windows (64, windows-2022)	5m 51s
macos-static	2m 5s
cygwin (32)	5m 18s
unix (ubuntu-20.04, g++, make)	5m 54s
cygwin (64)	3m 53s
unix (ubuntu-20.04, g++, cmake)	5m 54s
windows-mingw-build (32)	57s
unix (ubuntu-20.04, clang++, make)	6m 26s
windows-mingw-build (64)	58s
unix (ubuntu-20.04, clang++, cmake)	6m 17s
unix (ubuntu-22.04, g++, make)	6m 0s
unix (ubuntu-22.04, g++, cmake)	6m 28s
unix (ubuntu-22.04, clang++, make)	4m 5s
unix (ubuntu-22.04, clang++, cmake)	4m 30s
unix (macos-14, clang++, make)	5m 43s
unix (macos-14, clang++, cmake)	6m 4s
windows-mingw-testing (windows-2019, 32)	3m 56s
windows-mingw-testing (windows-2019, 64)	4m 23s
windows-mingw-testing (windows-2022, 32)	3m 39s
windows-mingw-testing (windows-2022, 64)	4m 39s
	1h 50m 29s

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