fix: DIA-1803: Stop using deprecated utcnow

[hakan458]

get rid of datetime.utcnow() which was deprecated in Python 3.12

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.93%. Comparing base (3be1a99) to head (540ab9d).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #6897   +/-   ##
========================================
  Coverage    76.92%   76.93%           
========================================
  Files          175      175           
  Lines        14138    14139    +1     
========================================
+ Hits         10876    10878    +2     
+ Misses        3262     3261    -1     

Flag	Coverage Δ
pytests	76.93% <100.00%> (+<0.01%)	⬆️

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