chore(deps): update actions/checkout digest to df4cb1c

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout (changelog)	action	digest	de0fac2 → df4cb1c

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.08%. Comparing base (0aded77) to head (50352e0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #83   +/-   ##
=======================================
  Coverage   98.08%   98.08%           
=======================================
  Files          21       21           
  Lines         680      680           
=======================================
  Hits          667      667           
  Misses         13       13           

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