chore(deps-dev): bump cython from 3.1.4 to 3.2.2

[dependabot[bot]]

Bumps cython from 3.1.4 to 3.2.2.

Release notes

Sourced from cython's releases.

3.2.2

No release notes provided.

3.2.1

No release notes provided.

3.2.0 (2025-11-05)

(Complete changelog for the 3.2.0 release, including pre-releases.)

Features added

• Builtin exception types are now inferred. (Github issue :issue:6908)

• The list of known, inferred and optimised Python builtins was updated. range is now considered a type. ascii, bin, format, hex, oct were added as functions. (Github issue :issue:6931)

• The f-string syntax was extended according to PEP-701. (Github issue :issue:5452)

• t-strings are implemented according to PEP-750. The implementation backports the template classes but prefers existing backports if installed separately. (Github issue :issue:6811)

• Unknown return type annotations with -> are no longer rejected but produce warnings. This allows better integration with Python type hints that are not always usable for Cython. -> None is also allowed now. Patch by jpe. (Github issue :issue:6946)

• The runtime Python dispatch for fused functions is substantially faster. (Github issues :issue:1385, :issue:6996)

• Freelists (via cdef class decorator and for internally used types such as async) are now also used in the Limited API and with extension type specs enabled. (Github issue :issue:7151)

• Module imports now quickly check for an already imported module to speed up reimports. Patch by Lysandros Nikolaou. (Github issue :issue:7035)

• Type checks on PEP-604 union types (int | None) are optimised into separate checks. (Github issue :issue:6935)

• Assignments to the PEP-604 union type float | None allow any suitable Python number as input and convert it to a Python float automatically. (Github issue :issue:5750)

... (truncated)

Changelog

Sourced from cython's changelog.

3.2.2 (2025-11-30)

Features added

• The C-API declarations were updated to include the new PyDict_*Ref() functions. (Github issue :issue:7291)

Bugs fixed

• Iteration over literal sequences and strings in generators generated invalid C code since 3.2.0. This was a regression due to the C array iteration optimisation in :issue:6926, which is now disabled inside of generators. (Github issue :issue:7342)

• Calling special methods of known exception types failed with an AttributeError. (Github issue :issue:7342)

• Calling the unbound __mul__ special method of builtin collections with subtypes failed. (Github issue :issue:7340)

• C string literals could generate invalid "const to non-const" casts in the C code. (Github issue :issue:7346)

• yield is no longer allowed inside of a cython.critical_section, but is now allowed while holding a cython.pymutex. (Github issue :issue:7317)

• Under lock congestion, acquiring the GIL could crash in Python 3.11, part 2. This bug was introduced in Cython 3.2.0. (Github issue :issue:7312)

• The new py_safe_* functions in libc.threads triggered C compiler warnings. (Github issue :issue:7356)

3.2.1 (2025-11-12)

Features added

• Cython now leaves markers about its utility code dependencies in the generated C code to help debugging "unused function" C compiler warnings. (Github issue :issue:7294)

Bugs fixed

... (truncated)

Commits

• 2a8ee41 Prepare release of 3.2.2.
• de755ac Update changelog.
• bb88e35 Silence a C signedness conversion warning.
• 8eaca89 Disable optimisation into C array iteration for iterating string literals ins...
• a9a7be1 CI: Trigger the sanitizers in the 3.2.x branch.
• c7e75d4 CI: Add a missing trigger file for the sanitizers.
• 41b9144 Update changelog.
• 928a41d Add address/undefined behaviour/thread sanitizer tests (#7334)
• 7eb8405 CI: Move independent workflows out of CI workflow file (GH-7370)
• 5d05168 Add PyDict_*Ref APIs to cpython.dict (#7291)
• Additional commits viewable in compare view

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