add option "cmake -Dzlib_legacy" for Zlib 1.x fallback
In case of a regression with Zlib 2.x on some less common computers, we provide a workaround to use Zlib 1.x by
cmake -B build -Dzlib_legacy=on
Please let us know and/or report the issue to zlib-ng project as Zlib 2.x should be a drop-in replacement for Zlib 1.x.