Build git-annex on Windows #2262

Job	Run time
build-package	9m 20s
test-annex (custom-config1, windows-2025)	5m 34s
test-annex (normal, windows-2025)	4m 25s
test-datalad (release)	1h 25m 32s
test-datalad (master)	1h 40m 45s
test-datalad (maint)	1h 34m 12s
	4h 59m 48s

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