[autoupdate] Update Cython from 3.0.5 to 3.0.6

[isc-adang]

A new version of Cython is available.

Changelog (sourced from https://cython.readthedocs.io/en/latest/src/changes.html)

3.0.6 (2023-11-26)

Features added

• Fused def function dispatch is a bit faster.

• Declarations for the wchar PyUnicode API were added. (Github issue #5836)

• The Python “nogil” fork is now also detected with the new Py_GIL_DISABLED macro. Patch by Hugo van Kemenade (Github issue #583652)

Bugs fixed

• Comparing dataclasses could give different results than Python. (Github issue #5857)

• float(std::string) generated invalid C code. (Github issue #5818)

• Using cpdef functions with cimport_from_pyx failed. (Github issue #5795)

• A crash was fixed when string-formatting a Python value fails. (Github issue #5787)

• On item access, Cython could try the sequence protocol before the mapping protocol in some cases if an object supports both. (Github issue #5776)

• A C compiler warning was resolved. (Github issue #5794)

• Complex numbers failed to compile in MSVC with C11. Patch by Lysandros Nikolaou. (Github issue #5809)

• Some issues with the Limited API and with PyPy were resolved. (Github issues #5695, #5696)

• A C++ issue in Python 3.13 was resolved. (Github issue #5790)

• Several directives are now also available (as no-ops) in Python code. (Github issue #5803)

• An error message was corrected. Patch by Mads Ynddal. (Github issue #5805)

I am a bot, and this action was performed automatically.