fix versioneer for python3.12

[pbsds]

tested building a wheel on python312 and python311

Same fix as in https://github.com/shaypal5/strct/pull/4:

curl -L https://github.com/shaypal5/strct/pull/4.patch | git am

preferably you'd vendor a newer versioneer or switch to pyproject.toml

[jacobtomlinson]

Appreciate the fix here! I think it would be better to upgrade versioneer though instead of patching the specific issue.

I ran the following commands and pushed a new commit:

pip install --upgrade versioneer
versioneer install

[kmpaul]

Thanks, @jacobtomlinson @pbsds!