[6.0] chore: bump workflow actions versions

[phil-davis]

Backport of #269

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.27%. Comparing base (353d6e9) to head (5c7648d).
⚠️ Report is 3 commits behind head on 6.0.

Additional details and impacted files

@@            Coverage Diff            @@
##                6.0     #270   +/-   ##
=========================================
  Coverage     94.27%   94.27%           
  Complexity      260      260           
=========================================
  Files            15       15           
  Lines           873      873           
=========================================
  Hits            823      823           
  Misses           50       50           

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