ICU-21249 Update copy of LICENSE file in icu4j tree

Lao dictionally repo location was updated in LICENSE file in icu4c, but a copy in icu4j tree was not. Sync the icu4j copy with the icu4c one.
diff --git a/icu4j/main/shared/licenses/LICENSE b/icu4j/main/shared/licenses/LICENSE
index e7f98ed..5d664a0 100644
--- a/icu4j/main/shared/licenses/LICENSE
+++ b/icu4j/main/shared/licenses/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