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

[phil-davis]

similar to #306 but for the 2.2 branch.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.08%. Comparing base (e9eca39) to head (81723a6).
⚠️ Report is 6 commits behind head on 2.2.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.2     #309      +/-   ##
============================================
+ Coverage     96.07%   97.08%   +1.01%     
- Complexity      124      125       +1     
============================================
  Files            13       13              
  Lines           484      515      +31     
============================================
+ Hits            465      500      +35     
+ Misses           19       15       -4     

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