arrow

ARROW-13108: [Python] Pyarrow 4.0.0 crashes upon import on macOS 10.13.6

I think we have been building the macos wheels with the wrong SDK from the latest iteration.

I managed to force-install the requested sdk version, but the vcpkg build fails with an sdk mismatch.

cc @kou @xhochy

Closes #10587 from kszucs/macos-sdkroot

Authored-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
Signed-off-by: Krisztián Szűcs <szucs.krisztian@gmail.com>