Bumps the actions group with 1 update: pypa/cibuildwheel.

Updates pypa/cibuildwheel from 4.1 to 4.2

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)

v4.1.1

• ✨ Adds pyodide-build as a separate build-frontend, now the default frontend for Pyodide, with verbosity flags handling. Any other frontend is ignored with a warning on Pyodide. (#2609, #2945)
• 🔐 Uses digests instead of tags for pinned container images, strengthening supply-chain security. The human-readable tags remain as comments in pinned_docker_images.cfg. (#2915)
• 🐛 Fixes platform-specific test-runtime environment variables (e.g. CIBW_TEST_RUNTIME_ANDROID) not being honored (#2941)
• 🐛 Fixes quoting of test-requires and audit-requires so PEP 508 specifiers containing spaces work (#2913)
• 🐛 Makes archs parsing case-insensitive and platform-aware, so e.g. arm64 works on Windows (#2920)
• 🐛 Uses an absolute path for the {project} placeholder in config-settings (#2934)
• 🐛 Validates the pyodide-version option against the build identifier with a clear error (#2925)
• 🐛 Fixes PyPy installs on macOS after PyPy switched its downloads from .tar.bz2 to .tar.gz (#2939)
• 🐛 Makes a matching python3-config available in the build and test venvs on macOS (#2922)
• 🛠 Updates dependencies and container pins (#2917, #2935, #2939)
• 🛠 Updates Android tests to current Python versions and the new test repository URL (#2933)
• 🛠 Drops the orjson dependency, no longer used by mypy 2+ (#2923)
• 📚 Builds the docs with properdocs, a MkDocs fork (#2946)
• 📚 Adds the missing cp314-pyodide_wasm32 entry to the build identifier table (#2947)
• 📚 Removes outdated notes about the pip wheel build frontend and ClearLinux (#2926)
• 💼 Adds a "CI: PyPy EoL" PR label to run PyPy EoL tests on PRs (#2930)
• 💼 Updates CI action pins and pre-commit hooks (#2914, #2932, #2938, #2940, #2942, #2943)

Sourced from pypa/cibuildwheel's changelog.

---

title: Changelog ref: changelog

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)

v4.1.1

24 July 2026

• ✨ Adds pyodide-build as a separate build-frontend, now the default frontend for Pyodide, with verbosity flags handling. Any other frontend is ignored with a warning on Pyodide. (#2609, #2945)
• 🔐 Uses digests instead of tags for pinned container images, strengthening supply-chain security. The human-readable tags remain as comments in pinned_docker_images.cfg. (#2915)
• 🐛 Fixes platform-specific test-runtime environment variables (e.g. CIBW_TEST_RUNTIME_ANDROID) not being honored (#2941)
• 🐛 Fixes quoting of test-requires and audit-requires so PEP 508 specifiers containing spaces work (#2913)
• 🐛 Makes archs parsing case-insensitive and platform-aware, so e.g. arm64 works on Windows (#2920)
• 🐛 Uses an absolute path for the {project} placeholder in config-settings (#2934)
• 🐛 Validates the pyodide-version option against the build identifier with a clear error (#2925)
• 🐛 Fixes PyPy installs on macOS after PyPy switched its downloads from .tar.bz2 to .tar.gz (#2939)
• 🐛 Makes a matching python3-config available in the build and test venvs on macOS (#2922)
• 🛠 Updates dependencies and container pins (#2917, #2935, #2939)
• 🛠 Updates Android tests to current Python versions and the new test repository URL (#2933)
• 🛠 Drops the orjson dependency, no longer used by mypy 2+ (#2923)
• 📚 Builds the docs with properdocs, a MkDocs fork (#2946)
• 📚 Adds the missing cp314-pyodide_wasm32 entry to the build identifier table (#2947)
• 📚 Removes outdated notes about the pip wheel build frontend and ClearLinux (#2926)
• 💼 Adds a "CI: PyPy EoL" PR label to run PyPy EoL tests on PRs (#2930)
• 💼 Updates CI action pins and pre-commit hooks (#2914, #2932, #2938, #2940, #2942, #2943)

v4.1.0

12 June 2026

• ✨ Updates Pyodide to the final 314.0.0 release, so Pyodide 3.14 wheels now build by default without the pyodide-prerelease enable flag. (#2906)
• 🐛 Raises clear errors when a build produces no wheel, instead of failing later with a confusing message (#2909)
• 🛠 Speeds up CLI startup through lazy imports on Python 3.15 (#2797)

... (truncated)

• 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)
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