Deprecation warnings in Python 3.11

[rcrdnalor]

• Platform: Any platform using Python 3.11+

• MythTV version: master (v34-pre) and v33

• Package version: N/A

• Component: Python Bindings

Deprecation warnings in Python 3.11

Python 3.11 deprecates the API locale.getdefaultlocale() with a
pending removal in Python 3.13 (I).

Python 3.12 moves this pending removal to Python 3.15 (II).

MythTV's metadata grabber scripts (tmdb3.py and tmdb3tv.py)
use locale.getdefaultlocale() several times.

Future aspects:
Python's PEP 686 (III) plans to switch the default encoding from
ASCII to UTF-8 with Python 3.15 (III)
Any fixes for this issue need to have this major change in mind.

References:
(I) https://docs.python.org/3/whatsnew/3.11.html#deprecated :
The locale.getdefaultlocale() function is deprecated and will be
removed in Python 3.13. Use locale.setlocale(),
locale.getpreferredencoding(False) and locale.getlocale()
functions instead.

(II) https://docs.python.org/3/whatsnew/3.12.html#deprecated :
The following APIs have been deprecated and will be removed
in Python 3.15 :
APIs: locale.getdefaultlocale() (gh-90817)

(III) https://peps.python.org/pep-0686/