Build git-annex on Windows #2195

Job	Run time
build-package	9m 1s
test-annex (normal, windows-2025)	4m 15s
test-datalad (master)	1h 28m 47s
test-datalad (release)	1h 25m 26s
test-datalad (maint)	1h 22m 22s
test-annex (custom-config1, windows-2025)	4m 29s
	4h 34m 20s

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