Update ICU (and sfntly) to latest version (as used by Chromium)

We were ~2.5 years behind. Most importantly, there's a compile fix for
Windows-on-ARM64 that's needed to continue development of that target.

Bug: skia:8569
Change-Id: I9dd2c85111113061dcff697ba5beedb838f3ff9b
Reviewed-on: https://skia-review.googlesource.com/c/175580
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed