pychess: ModuleNotFoundError: No module named 'telnetlib'

Description:

pychess fails to start:

$ pychess
Traceback (most recent call last):
  File "/usr/bin/pychess", line 236, in <module>
    from pychess.Main import PyChess
  File "/usr/lib/python3.13/site-packages/pychess/Main.py", line 26, in <module>
    from pychess.widgets.ExternalsDialog import ExternalsDialog
  File "/usr/lib/python3.13/site-packages/pychess/widgets/ExternalsDialog.py", line 8, in <module>
    from pychess.ic import TimeSeal
  File "/usr/lib/python3.13/site-packages/pychess/ic/TimeSeal.py", line 3, in <module>
    import telnetlib
ModuleNotFoundError: No module named 'telnetlib'

Additional info:

I have run pacman -Suy today (which updated many python packages), so everything is up to date.

• package version(s): pychess 1.0.5-4

Steps to reproduce:

Start pychess