Downgrade python in unit tests to 3.11 to stop random failures

[odunbar]

Purpose

• Closes Re-Downgrade unit tests to python 3.11 #415

Content

• downgrade tests to 3.11
• add info statement to help keep consistency in testing

---

• I have read and checked the items on the review checklist.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.18%. Comparing base (40079d4) to head (e07252b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #417   +/-   ##
=======================================
  Coverage   94.18%   94.18%           
=======================================
  Files          10       10           
  Lines        1977     1977           
=======================================
  Hits         1862     1862           
  Misses        115      115           

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