Add Python 3.12 test runner

[farmio]

Description

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code quality improvements to existing code or addition of tests

Checklist

• The documentation has been adjusted accordingly
• Tests have been added that prove the fix is effective or that the feature works
• The changes are documented in the changelog (docs/changelog.md)

[codecov]

Codecov Report

Merging #1339 (f9a7bdb) into main (1b227b9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1339   +/-   ##
=======================================
  Coverage   96.55%   96.55%           
=======================================
  Files         150      150           
  Lines        9584     9584           
=======================================
  Hits         9254     9254           
  Misses        330      330