Python 3.13 throws warnings for regex invalid escape sequence

[mutiev]

Hello!
Just FIY: I've made changes to pydub/utils.py on python 3.13 and now it throws warnings
But it works so anyway. Thanks for your solution :)

Console output:

me@voice >  magnts /Users/me/.virtualenvs/voice/bin/python /Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py

/Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py:301: SyntaxWarning: invalid escape sequence '\('
  m = re.match('([su]([0-9]{1,2})p?) \(([0-9]{1,2}) bit\)$', token)
/Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py:302: SyntaxWarning: invalid escape sequence '\('
  m2 = re.match('([su]([0-9]{1,2})p?)( \(default\))?$', token)
/Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py:311: SyntaxWarning: invalid escape sequence '\('
  elif re.match('(flt)p?( \(default\))?$', token):
/Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py:315: SyntaxWarning: invalid escape sequence '\('
  elif re.match('(dbl)p?( \(default\))?$', token):

Changed code here

# /Users/me/.virtualenvs/voice/lib/python3.13/site-packages/pydub/utils.py

from __future__ import division

import json
import os
import re
import sys
from subprocess import Popen, PIPE
from math import log, ceil
from tempfile import TemporaryFile
from warnings import warn
from functools import wraps

try:
    import audio.op as audioop # fix around with https://github.com/AstralScribe/python-audio
    # import audioop
except ImportError:
    import pyaudioop as audioop