deps: cherry-pick upstream ICU fix

ICU 60.1 has a bug resulting in incorrect Script_Extensions data
for 5 characters.
http://bugs.icu-project.org/trac/ticket/13462

Upstream patch:
http://bugs.icu-project.org/trac/changeset/40667

Refs: https://bugs.chromium.org/p/v8/issues/detail?id=4743#c54
PR-URL: #16931
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Steven R Loomis <srloomis@us.ibm.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Author: mathiasbynens