Migrate github actions to v8

[Adrian-B-Moreira]

• https://actions.docs.ansys.com/version/dev/migrations/index.html#migration-guide

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.66%. Comparing base (9a45151) to head (2c8e711).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #127   +/-   ##
=======================================
  Coverage   91.66%   91.66%           
=======================================
  Files           7        7           
  Lines         216      216           
=======================================
  Hits          198      198           
  Misses         18       18           

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