Regenerate data files for ICU 68.2 upgrade

Binary data files updated using:
system/timezone/update-tzdata.py

This updates the ICU version number inside of icu_tzdata.dat but doesn't
change the timezone data itself.

Bug: 160356314
Test: CtsIcuTestCases
Test: CtsIcu4cTestCases
Change-Id: Iffe02fec857fdf756c70cb7f1f62152e1f0a6f0f
12 files changed