chore: update actions/setup-go action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-go	action	major	v5.5.0 -> v6.0.0

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Release Notes

actions/setup-go (actions/setup-go)

v6.0.0

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.25%. Comparing base (72a88c0) to head (65747e7).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #76   +/-   ##
=======================================
  Coverage   94.25%   94.25%           
=======================================
  Files          18       18           
  Lines        1689     1689           
=======================================
  Hits         1592     1592           
  Misses         64       64           
  Partials       33       33           

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