Update Windows version used by GitHub CI #185

Job	Run time
build_linux (3.9)	2m 25s
build_linux (3.10)	2m 28s
build_linux (3.11)	2m 30s
build_linux (3.12)	2m 28s
build_windows (3.9)	14m 48s
build_windows (3.10)	9m 25s
build_windows (3.11)	25m 36s
build_windows (3.12)	11m 16s
test_linux (3.9, 1.26*, false, ubuntu-latest)	1m 11s
test_linux (3.10, 1.26*, false, ubuntu-latest)	1m 17s
test_linux (3.11, 1.26*, false, ubuntu-latest)	59s
test_linux (3.12, 1.26*, false, ubuntu-latest)	1m 21s
test_windows (3.9, 1.26*, false, windows-latest)	2m 49s
test_windows (3.10, 1.26*, false, windows-latest)	2m 58s
test_windows (3.11, 1.26*, false, windows-latest)	2m 56s
test_windows (3.12, 1.26*, false, windows-latest)	2m 51s
	1h 27m 18s

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