Add experimental Python 3.11 support

[duckontheweb]

Related Issue(s):

None

Description:

Adds Python 3.11.0-alpha.4 to our CI test matrix and adds a note on experimental support to the README.

PR Checklist:

• Code is formatted (run pre-commit run --all-files)
• Tests pass (run scripts/test)
• Documentation has been updated to reflect changes, if applicable
• This PR maintains or improves overall codebase code coverage.
• Changes are added to the CHANGELOG. See the docs for information about adding to the changelog.

[codecov-commenter]

Codecov Report

Merging #731 (cb9217a) into main (d659185) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #731   +/-   ##
=======================================
  Coverage   94.33%   94.33%           
=======================================
  Files          77       77           
  Lines       11285    11285           
  Branches     1347     1347           
=======================================
  Hits        10646    10646           
  Misses        459      459           
  Partials      180      180           

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[duckontheweb]

This also removes the Rust toolchain from the Python 3.10 CI build since orjson is consistently providing wheels for that version now.

[gadomski]

LGTM, only question: should the 3.11 CI build be marked "ok to fail"?

[duckontheweb]

LGTM, only question: should the 3.11 CI build be marked "ok to fail"?

Yes, good catch!

[duckontheweb]

LGTM, only question: should the 3.11 CI build be marked "ok to fail"?

Yes, good catch!

I updated the CI to specifically call out experimental Python versions using an include statement and use a conditional continue-on-error statement to allow the workflow to succeed if these fail. This is more in line with the GitHub Actions example and I think it's more clear that the experimental versions are just that.