Bump pypa/cibuildwheel from 4.1.1 to 4.2.0

[dependabot]

Bumps pypa/cibuildwheel from 4.1.1 to 4.2.0.

Release notes

Sourced from pypa/cibuildwheel's releases.

v4.2.0

• 🌟 CPython 3.15 wheels are now built by default - without the "cpython-prerelease" enable set. It's time to build and upload these wheels to PyPI! This release includes CPython 3.15.0rc1, which is guaranteed to be ABI compatible with the final release. (#2944)
• ✨ Adds Pyodide 3.15 support with the cp315-pyodide_wasm32 build identifier, using Pyodide 315.0.0a2. These are also stable wrt. the final release. (#2958)
• 🐛 Retries a failed download six times with exponential backoff, so short network outages no longer stop a build. A 4xx response is still reported at once. (#2953)
• 🐛 Accepts default as a build-frontend value on Pyodide, and accepts pyodide-build in the top-level table and in overrides (#2951)
• 🛠 Holds pip back on GraalPy, where newer pip breaks the build (#2955)
• 🛠 Updates Pyodide to 314.0.4 (#2949, #2952)
• 🛠 Updates dependencies and container pins (#2952, #2960)
• 💼 Updates CI action pins (#2948, #2954)
• 🧪 Uses pp311 for the abi3 test, and deletes test_overridden_pip_constraint, which is not necessary since #2583 (#2956, #2957)

Changelog

Sourced from pypa/cibuildwheel's changelog.

v4.2.0

4 August 2026

• 🌟 CPython 3.15 wheels are now built by default - without the "cpython-prerelease" enable set. It's time to build and upload these wheels to PyPI! This release includes CPython 3.15.0rc1, which is guaranteed to be ABI compatible with the final release. (#2944)
• ✨ Adds Pyodide 3.15 support with the cp315-pyodide_wasm32 build identifier, using Pyodide 315.0.0a2. These are also stable wrt. the final release. (#2958)
• 🐛 Retries a failed download six times with exponential backoff, so short network outages no longer stop a build. A 4xx response is still reported at once. (#2953)
• 🐛 Accepts default as a build-frontend value on Pyodide, and accepts pyodide-build in the top-level table and in overrides (#2951)
• 🛠 Holds pip back on GraalPy, where newer pip breaks the build (#2955)
• 🛠 Updates Pyodide to 314.0.4 (#2949, #2952)
• 🛠 Updates dependencies and container pins (#2952, #2960)
• 💼 Updates CI action pins (#2948, #2954)
• 🧪 Uses pp311 for the abi3 test, and deletes test_overridden_pip_constraint, which is not necessary since #2583 (#2956, #2957)

Commits

• 1828c10 Bump version: v4.2.0
• 1ed6c22 [Bot] Update dependencies (#2960)
• 92e2145 feat: Python 3.15 build by default (#2944)
• 3568a1c [Bot] Update dependencies (#2952)
• 03cefa3 feat: add pyodide_315 support (#2958)
• 73417ae fix(tests): delete test_overridden_pip_constraint (#2957)
• 3c603e4 fix: pin pip on GraalPy (#2955)
• f0b2156 chore: use pp311 for test_abi3 (#2956)
• ffd2e18 fix(schema): default is fine for pyodide too (#2951)
• dca67ee chore(deps): bump the actions group with 5 updates (#2954)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.27%. Comparing base (b9ff891) to head (b8678d3).
⚠️ Report is 21 commits behind head on 3.15.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             3.15   #13342   +/-   ##
=======================================
  Coverage   98.27%   98.27%           
=======================================
  Files         136      136           
  Lines       49417    49417           
  Branches     2666     2666           
=======================================
  Hits        48563    48563           
  Misses        674      674           
  Partials      180      180           

Flag	Coverage Δ
CI-GHA	98.27% <ø> (ø)
OS-Linux	98.05% <ø> (ø)
OS-Windows	95.73% <ø> (ø)
OS-macOS	97.22% <ø> (ø)
Py-3.10	97.38% <ø> (+<0.01%)	⬆️
Py-3.11	97.68% <ø> (+<0.01%)	⬆️
Py-3.12	97.76% <ø> (+<0.01%)	⬆️
Py-3.13	97.74% <ø> (+<0.01%)	⬆️
Py-3.14	97.84% <ø> (-0.01%)	⬇️
Py-3.14t	96.84% <ø> (-0.01%)	⬇️
Py-pypy-3.11	96.67% <ø> (+0.01%)	⬆️
VM-macos	97.22% <ø> (ø)
VM-ubuntu	98.05% <ø> (ø)
VM-windows	95.73% <ø> (ø)
cython-coverage	38.52% <ø> (ø)

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[codspeed-hq]

Merging this PR will not alter performance

✅ 84 untouched benchmarks
⏩ 86 skipped benchmarks¹

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_{Comparing dependabot/github_actions/3.15/pypa/cibuildwheel-4.2.0 (b8678d3) with 3.15 (b9ff891)²}

Footnotes

1. 86 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on 3.15 (ffb8405) during the generation of this report, so b9ff891 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩