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
diff --git a/output_data/icu_overlay/LICENSE b/output_data/icu_overlay/LICENSE
index e7f98ed..5d664a0 100644
--- a/output_data/icu_overlay/LICENSE
+++ b/output_data/icu_overlay/LICENSE
@@ -284,9 +284,9 @@
  #  Copyright (c) 2013 International Business Machines Corporation
  #  and others. All Rights Reserved.
  #
- # Project: http://code.google.com/p/lao-dictionary/
- # Dictionary: http://lao-dictionary.googlecode.com/git/Lao-Dictionary.txt
- # License: http://lao-dictionary.googlecode.com/git/Lao-Dictionary-LICENSE.txt
+ # Project: https://github.com/veer66/lao-dictionary
+ # Dictionary: https://github.com/veer66/lao-dictionary/blob/master/Lao-Dictionary.txt
+ # License: https://github.com/veer66/lao-dictionary/blob/master/Lao-Dictionary-LICENSE.txt
  #              (copied below)
  #
  #  This file is derived from the above dictionary, with slight