Build git-annex on Windows #2263

Job	Run time
build-package	8m 31s
test-annex (custom-config1, windows-2025)	4m 46s
test-annex (normal, windows-2025)	4m 30s
test-datalad (master)	1h 40m 52s
test-datalad (maint)	1m 34s
test-datalad (release)	1h 34m 12s
	3h 34m 25s

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