Update cython requirement from >=3.0.0 to >=3.2.4

[dependabot]

Updates the requirements on cython to permit the latest version.

Changelog

Sourced from cython's changelog.

3.2.4 (2026-01-04)

Features added

• In preparation of Cython 3.3, a new decorator @collection_type(tname) can be used to advertise an extension type as being a 'sequence' or 'mapping'. This currently only has the effect of setting the Py_TPFLAGS_SEQUENCE flag on the type or not, but is provided for convenience to allow using the new decorator already in Cython 3.2 code.

• Several C++ exception declarations were added to libcpp.exceptions. (Github issue :issue:7389)

Bugs fixed

• Pseudo-literal default values of function arguments like arg=str() could generate invalid C code when internally converted into a real literal. (Github issue :issue:6192)

• The pickle serialisation of extension types using the auto_pickle feature was larger than necessary since 3.2.0 for types without Python object attributes. It is now back to the state before 3.2.0 again. (Github issue :issue:7443)

• Constants are now only made immortal on freethreading Python if they are not shared. (Github issue :issue:7439)

• PyDict_SetDefaultRef() is now used when available to avoid temporary borrowed references. (Github issue :issue:7347)

• Includes all fixes as of Cython 3.1.8.

3.2.3 (2025-12-14)

Features added

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

• The Py_mod_gil module setting can now be changed with a C macro, overriding the freethreading_compatible directive setting. (Github issue :issue:7404)

Bugs fixed

... (truncated)

Commits

• 21bda42 Update changelog.
• ea5e926 Define missing C++ exception classes (#7389)
• c533d67 Add sequence return type annotations in Parsing.py (GH-7416)
• d056a18 Allow 'mapping' as @​collection_type() in preparation of 3.3, but without actu...
• d347c82 Remove exclusion of collection_type in test (#7442)
• fd6e825 Merge branch '3.1.x' into 3.2.x
• ce5c6cb Update changelog.
• 74b97f9 Fix arg=str() default argument (GH-6193)
• 9c9e5c7 Avoid immortalizing anything shared on freethreading (GH-7439)
• 9d5507b Fix accidental inefficiency in auto-pickling that always stored the object st...
• Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request

Dependency Name	Ignore Conditions
cython	[< 3.1, > 3.0.0]

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.