chore(ci): update github workflow actions to latest versions

[phil-davis]

similar to #258

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.31%. Comparing base (fdf8565) to head (5b52d22).
⚠️ Report is 13 commits behind head on 6.0.

Additional details and impacted files

@@             Coverage Diff              @@
##                6.0     #261      +/-   ##
============================================
- Coverage     94.40%   94.31%   -0.09%     
- Complexity      259      260       +1     
============================================
  Files            15       15              
  Lines           876      880       +4     
============================================
+ Hits            827      830       +3     
- Misses           49       50       +1     

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