As above, I see Compton has been replaced with Picom likely due to its sheer lack of development over the last couple of years.
What about replacing zlib for zlib-ng for the exact same reasons? Or at least take it in to serious consideration.
The last commit to zlib was over almost 3 years ago, despite many pull requests being made for improvements. This is why the zlib-ng project was started and as you can see is in active development merging many of the fixes proposed for zlib that continue to go ignored.
Anyway, just a thought.