Feature/python version upgrades

[jake-skipper]

Summary

This PR does the following:

1. Updates the pipeline functions to use Python 3.9 or greater as 3.8 is going to be EOL soon,
2. Adds pipeline support for Python 3.11,
3. Updates away from ubuntu-20.04 runner type to ubuntu-latest; and,
4. A few tweaks to make the pipeline work in a 3.9 environment.

Why This Is Needed

Python 3.8 is going EOL and we may as well loop in an Ubuntu runner update while we're making all the changes. This will hopefully keep the pipeline going a bit longer without a complete refactor.

NOTE: There are still some areas where Python 3.8 references were left in place, namely awslambda testing within the tool. I have gone ahead and left these for now as they depend on lambci images which have not been updated to support past 3.8, and AWS still supports 3.8 for a time. Will open issues for these problems separately.

Checklist

• Have you followed the guidelines in our Contribution Requirements?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Does your submission pass tests?
• Have you linted your code locally prior to submission?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully ran tests with your changes locally?
• Have you updated documentation, as applicable?

[codecov]

Codecov Report

Merging #2030 (28018e8) into master (7f2db9f) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2030   +/-   ##
=======================================
  Coverage   90.18%   90.18%           
=======================================
  Files         247      247           
  Lines       15681    15681           
=======================================
  Hits        14142    14142           
  Misses       1539     1539           

Files	Coverage Δ
runway/_logging.py	95.65% <100.00%> (ø)
runway/cfngin/hooks/aws_lambda.py	84.81% <100.00%> (ø)
runway/cfngin/hooks/awslambda/models/args.py	100.00% <ø> (ø)

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