maint(ci): setup-go - re-enable cache

[jharley]

Now that golanglint-ci action has been upgraded to 5.x (#466) we can re-enable the setup-go's management of the build cache.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.89%. Comparing base (69106f8) to head (045d7d0).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #467   +/-   ##
=======================================
  Coverage   82.89%   82.89%           
=======================================
  Files          63       63           
  Lines        4308     4308           
=======================================
  Hits         3571     3571           
  Misses        576      576           
  Partials      161      161           

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