Update bundled zlib to 1.3.1 for macOS SDK compatibility

[Copilot]

Remove-me-section

• Notify reviewers about the pull request
• Keep only necessary sections below for the review

• Summary: Recent macOS SDK headers expose a conflict with the bundled zlib 1.2.12; this updates the vendored zlib to a version compatible with modern Apple Clang.
• Bundled library update: Refreshed third_party/zlib headers and sources to upstream 1.3.1, including updated README/ChangeLog metadata.

Example snippet:

#define ZLIB_VERSION "1.3.1"

Generic request

• PR name follows the pattern #1234 – issue name
• branch name does not contain '#'
• base branch (master or release/xx) is correct
• PR is linked with the issue
• task status changed to "Code review"
• code follows product standards
• regression tests updated

For release/xx branch

• backmerge to master (or newer release/xx) branch is created

Optional

• unit-tests written
• documentation updated

Backmerge request

• PR name follows the pattern Backmerge: #1234 – issue name
• PR is linked with the issue
• base branch (master or release/xx) is correct
• code contains only backmerge changes

Bump request

• PR name follows the pattern Bump version to ...
• add brackets [ ] for 'skip ci' and put it into the body
• milestone is linked to PR
• all tickets are closed inside the relevant milestone

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• zlib.net
  • Triggering command: /usr/bin/curl curl -fsSL REDACTED -o zlib-1.3.1.tar.gz -imultiarch on.c.o xman.dir/Debug/p/tmp/ccsGHTtr.s third_party/inchas lerplate/cairo-b-I third_party/inch/usr/include/freetype2 as --gd�� UNASVG_BUILD_STA-o -o s /tmp/ccDN1c7T.s (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

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Original prompt

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This section details on the original issue you should resolve

<issue_title>Update zlib library to latest version</issue_title>
<issue_description>Summary
Now we have error during compilation: MacOSX.sdk/usr/include/_stdio.h:318:7: error: expected identifier or '('
It typically occurs when building software on recent versions of macOS (especially macOS 15.4 with Xcode 16 and Apple Clang 17/LLVM 19) due to an incompatibility with the system's updated SDK headers.
This issue is most frequently tied to an outdated, bundled version of the zlib library within the project you are trying to compile. The problem arises from conflicting declarations of the fdopen function, where the macOS SDK defines it in a way that clashes with the older zlib source code.

Solution
Update the bundled library: The most robust solution is to update the problematic library (usually zlib) to a version compatible with the newer Clang compilers (zlib 1.3.1 or newer incorporates the fix). Many projects have already applied this fix, so checking for a newer version of your project's source code is a good first step.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Update zlib library to latest version #3459

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