Build wheel files for Python 3.11

[gordthompson]

Fixes: #1110

Update .github/workflows/ubuntu_build.yml to use
cibuildwheel v2.11.2

Add 3.11 references to appveyor.yml and setup.py

[gordthompson]

I see that there are a number of deprecation warnings in the workflow output.

[keitherskine]

Many thanks for putting this PR together, @gordthompson !

I notice we're getting deprecation warnings from the runner ("Node.js 12 actions are deprecated" and "The set-output command is deprecated and will be disabled soon"), but I'm fairly sure we can get rid of those by upgrading the runner actions from version 2 to version 3. See lines 152 and 155 of .github/workflows/ubuntu_build.yml. Is it worth trying version 3 of "actions/checkout" and "actions/setup-python" to see if that removes the deprecation warnings?

[keitherskine]

Appveyor is always a bit slower to release the latest Python version than Github, etc. Python 3.11 is not yet available on Appveyor, hence the Appveyor (Windows) tests for Python3.11 are failing. Either we'll have to wait until Appveyor releases Python 3.11 in their windows images, or we'll have to delete these lines for now.

[keitherskine]

Here's the Appveyor ticket for Python 3.11, currently available on Ubuntu but not on Windows yet:
appveyor/ci#3844

[gordthompson]

Still seeing "The set-output command is deprecated and will be disabled soon.", but fortunately things won't break completely until June of next year so the maintainer(s) of the affected action(s) have time to fix their stuff. (FWIW, checkout says that theirs is already fixed.

[keitherskine]

Looks good, Gord. Thanks again.