golangci-lint(unconvert): fix test files

[mmorel-35]

Please add a summary of your change

Fix unconvert errors in test files

Does your change fix a particular issue?

No

Please indicate you've done the following:

• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
• Updated the corresponding documentation in site/content/docs/main.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.66%. Comparing base (f7c0244) to head (579e32a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7608   +/-   ##
=======================================
  Coverage   58.66%   58.66%           
=======================================
  Files         344      344           
  Lines       28731    28731           
=======================================
  Hits        16854    16854           
  Misses      10448    10448           
  Partials     1429     1429           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.