deps: backport ICU fix for ARM64 Windows

ICU 63 as ingested by Node.js does not quite support ARM64 Windows
because its OBJ file IMAGE_FILE_MACHINE_TYPE field logic defaults to
x86 instead of Unknown.

A fix for this has been merged upstream for ICU 64.1:

unicode-org/icu#412

This commit backports this change.

Author: jkunkee