Use GITHUB_OUTPUT envvar instead of set-output command as the latter is deprecated

[arunsathiya]

save-state and set-output commands used in GitHub Actions are deprecated and GitHub recommends using environment files.

This PR updates the usage of set-output to $GITHUB_OUTPUT

Instructions for envvar usage from GitHub docs:

https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-output-parameter

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8493f8a) 38.15% compared to head (247a086) 38.15%.
Report is 13 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #10581   +/-   ##
=========================================
  Coverage     38.15%   38.15%           
- Complexity    11916    11918    +2     
=========================================
  Files          3771     3771           
  Lines         94528    94528           
  Branches      10287    10287           
=========================================
+ Hits          36067    36069    +2     
  Misses        55465    55465           
+ Partials       2996     2994    -2     

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