Fix Windows wheel build quoting, and stop it from blocking other platforms' releases

[wbarnha]

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Description

e9f102f (#762) changed [tool.cibuildwheel] before-build in pyproject.toml
from pip install Cython to pip install 'Cython>=3.1'. cibuildwheel runs
that command through the platform's native shell, and on windows-2022 that's
cmd.exe, which does not treat single quotes as a quoting character. The >
was therefore parsed as cmd's output-redirection operator: the command ran as
pip install 'Cython with stdout redirected to a file literally named
3.1', so Cython was never installed and the Windows wheel build failed —
confirmed against the actual failed run log (cibuildwheel: Command pip install 'Cython>=3.1' failed with code 1.).

Because publish needs build_wheels, and a matrix job only succeeds if
every leg does, that one Windows failure blocked the release for every
platform, so PyPI releases went missing entirely.

Two changes:

1. Double-quote the Cython version spec instead of single-quoting it —
   double quotes are honored by both cmd.exe and bash/zsh, so the command
   is quoted correctly on every platform cibuildwheel builds on here.
2. Drop windows-2022 from the build_wheels matrix, so a future
   Windows-specific failure can no longer block releases for the other
   platforms. It can be re-added once Windows wheel builds have proven
   stable again.

Fixes #790

Test plan

• python3 -c "import tomllib; tomllib.load(open('pyproject.toml','rb'))" — pyproject.toml parses
• python3 -c "import yaml; yaml.safe_load(open('.github/workflows/python-package.yml'))" — workflow YAML parses
• CI passes on this PR (lint, tests, free-threading, wheel/sdist builds where applicable)

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.20%. Comparing base (181b184) to head (3bb79ee).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #792   +/-   ##
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  Coverage   96.20%   96.20%           
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  Files         110      110           
  Lines       11789    11789           
  Branches     1281     1281           
=======================================
  Hits        11342    11342           
  Misses        350      350           
  Partials       97       97           

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