Update to the ucs package and inputenc [utf8x] option
New Support address
https://github.com/LaTeX-Package-Repositories/ucs/issues
This update (By David Carlisle, with permission from the original
authors, Dominique Unruh and Wolfgang Jeltsch) makes
\usepackage[utf8x]{inputenc}
act like the standard utf8 option, so has no effect in most cases
as UTF-8 is the default encoding in recent LaTeX releases.
If the ucs package is explicitly loaded, the original utf8x
definitions are used, but ucs.sty and utf8x.def have been updated
to use e-tex \protected definitions to make them compatible with
Unicode support in LaTeX, notably \MakeUppercase in the June 2022 LaTeX
3a7c4bb439