CI: skip 32-bit Windows wheel builds

[mykaul]

The *i686 skip pattern in cibuildwheel config only matches Linux 32-bit identifiers (e.g. cp310-manylinux_i686), not Windows 32-bit which uses win32 (e.g. cp310-win32). Add *win32 to skip 32-bit Windows builds, which fail because:

• c_shard_info.c uses __uint128_t (GCC extension, unsupported by MSVC)
• cryptography test dependency fails to build for i686-pc-windows-msvc due to missing OpenSSL

Fixes: #906

[coderabbitai]

📝 Walkthrough

Walkthrough

The pyproject.toml file's [tool.cibuildwheel] skip list is extended by adding the *win32 pattern, which instructs cibuildwheel to exclude Win32 wheel builds from the CI build matrix.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the main change: skipping 32-bit Windows wheel builds in CI.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The description clearly summarizes the cibuildwheel change, explains why it is needed, and includes a Fixes annotation.

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[Lorak-mmk]

Is it a fix for #906 ?

[mykaul]

Is it a fix for #906 ?

I hope so...

[Lorak-mmk]

Can you add Fixes:?