Build git-annex on Windows #2169

Job	Run time
build-package	10m 51s
test-datalad (release)	1h 26m 47s
test-annex (normal, windows-2025)	4m 36s
test-datalad (maint)	1h 25m 55s
test-datalad (master)	1h 32m 4s
test-annex (custom-config1, windows-2025)	4m 31s
	4h 44m 44s

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