Support for Python 3.11

Importing the github module gives an error; the error comes from deprecated -> wrapt, which uses inspect.formatargspec, which was deprecated since Python 3.5 and removed in Python 3.11.

    import github
env/lib64/python3.11/site-packages/github/__init__.py:56: in <module>
    from github.MainClass import Github, GithubIntegration
env/lib64/python3.11/site-packages/github/MainClass.py:59: in <module>
    import github.Event
env/lib64/python3.11/site-packages/github/Event.py:32: in <module>
    import github.NamedUser
env/lib64/python3.11/site-packages/github/NamedUser.py:44: in <module>
    import github.Organization
env/lib64/python3.11/site-packages/github/Organization.py:50: in <module>
    import github.Repository
env/lib64/python3.11/site-packages/github/Repository.py:93: in <module>
    from deprecated import deprecated
env/lib64/python3.11/site-packages/deprecated/__init__.py:15: in <module>
    from deprecated.classic import deprecated
env/lib64/python3.11/site-packages/deprecated/classic.py:15: in <module>
    import wrapt
env/lib64/python3.11/site-packages/wrapt/__init__.py:10: in <module>
    from .decorators import (adapter_factory, AdapterFactory, decorator,
env/lib64/python3.11/site-packages/wrapt/decorators.py:34: in <module>
    from inspect import ismethod, isclass, formatargspec
E   ImportError: cannot import name 'formatargspec' from 'inspect' (/usr/lib64/python3.11/inspect.py)

Start by reproducing the reported import failure with Python 3.11 and inspect the dependency chain through deprecated, wrapt, and inspect.formatargspec shown in the traceback. Done means importing github succeeds on Python 3.11 without the reported ImportError; the payload does not identify a repository file or test to run.