Update CHANGELOG for v5.3.0

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Automated changelog update for release v5.3.0.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (82e9a9c) to head (f8cef31).
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Additional details and impacted files

@@             Coverage Diff             @@
##                main      #155   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       354       354           
===========================================
  Files              6         6           
  Lines            823       823           
===========================================
  Hits             823       823           

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