Upgrade go-lang 1.21

[rashedkvm]

Pull request

What this PR does / why we need it

Upgrade go-lang 1.21

Which issue(s) this PR fixes

Fixes #

Describe testing done for PR

Additional information or special notes for your reviewer

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (05edaae) 70.10% compared to head (3544ef3) 70.10%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #667   +/-   ##
=======================================
  Coverage   70.10%   70.10%           
=======================================
  Files          17       17           
  Lines         950      950           
=======================================
  Hits          666      666           
  Misses        263      263           
  Partials       21       21           

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