deps: ICU 60 bump

- Update to released ICU 60.1, including:
  - CLDR 32 (many new languages and data improvements)
  - Unicode 10 (8,518 new characters, including four new scripts,
  7,494 new Han characters, and 56 new emoji characters)
  - UTF-8 malformed bytes now handled according to W3C/WHATWG spec

Fixes: https://github.com/nodejs/node/issues/15540
PR-URL: https://github.com/nodejs/node/pull/16876


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>