-To regenerate the encoding data, get the latest ICU encoding data from:
-http://source.icu-project.org/repos/icu/icu/trunk/source/data/mappings/convrtrs.txt
-then convert it with this script using the command above.
+To update the encoding data, get the latest ICU encoding data from:
+https://raw.githubusercontent.com/unicode-org/icu/main/icu4c/source/data/mappings/convrtrs.txt