classmethod properties are removed in Python 3.13

[QuLogic]

Problem description

This was added in #519: https://github.com/zarr-developers/numcodecs/blob/696e58253494f4ffb21f4d3ca30e298b22c1c929/numcodecs/zstd.pyx#L261-L277

However, as of Python 3.11, using classmethod on property was deprecated, and has been removed in Python 3.13: https://docs.python.org/3.13/library/functions.html#classmethod

Deprecated since version 3.11, removed in version 3.13: Class methods can no longer wrap other descriptors such as property().

This causes tests to fail on Python 3.13:

____________________________ test_native_functions _____________________________
    def test_native_functions():
        # Note, these assertions might need to be changed for new versions of zstd
>       assert Zstd.default_level == 3
E       AssertionError: assert <bound method default_level of <class 'numcodecs.zstd.Zstd'>> == 3
E        +  where <bound method default_level of <class 'numcodecs.zstd.Zstd'>> = Zstd.default_level
../../BUILDROOT/usr/lib64/python3.13/site-packages/numcodecs/tests/test_zstd.py:93: AssertionError

https://kojipkgs.fedoraproject.org/work/tasks/9111/120819111/build.log

Version and installation information

Please provide the following:

• Value of numcodecs.__version__ 0.13.0
• Version of Python interpreter 3.13.0b3
• Operating system (Linux/Windows/Mac) Fedora Rawhide
• How NumCodecs was installed (e.g., "using pip into virtual environment", or "using conda") from source