Build git-annex on macOS ARM64 #139

Job	Run time
build-package	10m 13s
test-annex-more	25s
test-datalad (maint)	1h 50m 37s
test-annex (normal, macos-latest)	4m 47s
test-datalad (master)	1h 44m 14s
test-annex (custom-config1, macos-15)	4m 42s
test-datalad (release)	1h 53m 9s
test-annex (crippled-tmp, macos-15)	7m 56s
test-annex (normal, macos-15)	4m 57s
	6h 1m 0s

Provide feedback