Python 3.13 support

[thijsvandien]

Currently fdb won't work using the just released version of Python:

>>> import fdb
Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    import fdb
  File "/Users/tvdien/.pyenv/versions/3.13.0/lib/python3.13/site-packages/fdb/__init__.py", line 28, in <module>
    from fdb import gstat
  File "/Users/tvdien/.pyenv/versions/3.13.0/lib/python3.13/site-packages/fdb/gstat.py", line 28, in <module>
    from locale import LC_ALL, LC_CTYPE, getlocale, setlocale, resetlocale
ImportError: cannot import name 'resetlocale' from 'locale' (/Users/tvdien/.pyenv/versions/3.13.0/lib/python3.13/locale.py). Did you mean: 'setlocale'?