chore(deps): update golang docker tag to v1.21

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
golang	stage	minor	1.17-alpine -> 1.21-alpine

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (49c3b9e) 41.94% compared to head (e55f6e7) 41.94%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #204   +/-   ##
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  Coverage   41.94%   41.94%           
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  Files          14       14           
  Lines        2093     2093           
  Branches       42       42           
=======================================
  Hits          878      878           
  Misses       1197     1197           
  Partials       18       18           

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[aabmass]

go mod is unhappy because there is no go.mod. I think we fixed this in another repo with go mod init e2e. I think it is intentional to not carry a go.mod to always get bleeding edge versions of the proftest in continous tests.

Oops nvm. It just needs to use go install. Will update