[Bug other/105404] Update in-tree copy of zlib to zlib-1.3.1

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105404

--- Comment #22 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Sam James from comment #21)
> Sync done in r16-2677-g7a79219383c83c. I'll handle binutils-gdb.git next.

Could you post the link to the binutils-gdb.git change here, too, please?