Release 2.28.1

[knolleary]

• Update CHANGELOG for 2.28.1
• Update version to 2.28.1

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.29%. Comparing base (9e8c0fc) to head (f48dbe1).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6953   +/-   ##
=======================================
  Coverage   76.29%   76.29%           
=======================================
  Files         403      403           
  Lines       20293    20293           
  Branches     4880     4880           
=======================================
  Hits        15482    15482           
  Misses       4811     4811           

Flag	Coverage Δ
backend	76.29% <ø> (ø)

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