Python version 3.11 as an valid option

[NickVeld]

It can be a part of an "epic" called "Support for python3.11" #1996

For the following line

py_version=311

Behavior before:

ValueError: The python version 311 is not supported. You can set a python version with the -py or --python-version flag. The following versions are supported: ('all', '2', '27', '3', '310', '35', '36', '37', '38', '39')

Behavior after:
Everything is OK.

Version: 5.10.1