Update tryghost/actions digest to 28f4d60

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tryghost/actions (changelog)	action	digest	a16f746 → 28f4d60

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.07%. Comparing base (7b52364) to head (2a70d42).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #766   +/-   ##
=======================================
  Coverage   98.07%   98.07%           
=======================================
  Files          86       86           
  Lines        2804     2804           
  Branches      519      519           
=======================================
  Hits         2750     2750           
  Misses         12       12           
  Partials       42       42           

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