feat: update django-simple-history to latest version

[Talha-Rizwan]

• Upgrade django-simple-version to 3.8.0
• Fix a breaking change
• Fix a failing test due to breakage
• no model changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.29%. Comparing base (3af5826) to head (bcaa952).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2303   +/-   ##
=======================================
  Coverage   95.29%   95.29%           
=======================================
  Files         195      195           
  Lines       21664    21665    +1     
  Branches     1509     1509           
=======================================
+ Hits        20644    20645    +1     
  Misses        771      771           
  Partials      249      249           

Flag	Coverage Δ
unittests	95.29% <100.00%> (+<0.01%)	⬆️

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