Update python Docker tag to v3.12

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
python	final	minor	3.11 -> 3.12

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.47%. Comparing base (9b64388) to head (9defe2c).
Report is 5 commits behind head on main.

❗ Current head 9defe2c differs from pull request most recent head 0e20100

Please upload reports for the commit 0e20100 to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #20   +/-   ##
=======================================
  Coverage   98.47%   98.47%           
=======================================
  Files           2        2           
  Lines         526      526           
=======================================
  Hits          518      518           
  Misses          8        8           

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[webbnh]

Changing the Python version requires modifying not just the base container image but also the CI workflow.

[webbnh]

I've decided not to pursue this change: Python 3.11 is working and not yet near end-of-life, so I think we'll skip 3.12 rather than go to the effort of testing and redeployment.

[renovate]

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