Update actions/checkout digest to df4cb1c

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout (changelog)	action	digest	8e8c483 → df4cb1c

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 24.36%. Comparing base (310dd9f) to head (0296a27).
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Additional details and impacted files

@@            Coverage Diff            @@
##               main     #121   +/-   ##
=========================================
  Coverage     24.36%   24.36%           
  Complexity      174      174           
=========================================
  Files            36       36           
  Lines           788      788           
  Branches         54       54           
=========================================
  Hits            192      192           
  Misses          595      595           
  Partials          1        1           

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