locale: Update to UCD 17.0.0

Starting with Unicode 17.0.0, the zipped versions of the data files are
only published in https://www.unicode.org/Public/<version>/ucd/

https://www.unicode.org/Public/zipped/ReadMe.txt

Reviewed by: bapt
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D53982