chore: update checkout GHAs

[bryce-mcmath]

Summary of Changes

Just upgraded the checkout action from v2 and v3 to v4

Related Issues

N/A

Pull Request Checklist

Tick all boxes below to demonstrate that you have completed the respective task. If the item does not apply to your this PR check it anyway to make it apparent that there's nothing to do.

• All commits contain a DCO Signed-off-by line (we use the DCO GitHub app to enforce this);
• Updated LICENSE-3RD-PARTY.md for any added dependencies or vendored components;
• Updated documentation as needed for changed code and new or modified features;
• Added sufficient tests so that overall code coverage is not reduced.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e952d7c) 61.12% compared to head (c44bfeb) 61.12%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1027   +/-   ##
=======================================
  Coverage   61.12%   61.12%           
=======================================
  Files         181      181           
  Lines        5520     5520           
  Branches     1571     1571           
=======================================
  Hits         3374     3374           
  Misses       2122     2122           
  Partials       24       24           

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