maint: mark function arguments as unused where applicable

[GabrielNagy]

The easiest and safest approach to satisfy the revive linter, as these functions must have this exact signature. The occurrences were mostly split between Cobra and tests, hence the separate commits for easier review.

Fixes UDENG-2287

Note that the latest version of golangci-lint (currently 1.56.2) pulls in a version of gosec where the #nosec directive is sort of broken, hence the additional influx of warnings in the dependabot PR.

[codecov-commenter]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (e35ef3a) 87.65% compared to head (bf0da61) 87.65%.
Report is 4 commits behind head on main.

Files	Patch %	Lines
cmd/adsysd/client/policy.go	60.00%	0 Missing and 4 partials ⚠️
cmd/adwatchd/commands/main.go	50.00%	1 Missing ⚠️
cmd/adwatchd/commands/version.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #918   +/-   ##
=======================================
  Coverage   87.65%   87.65%           
=======================================
  Files          76       76           
  Lines        6713     6716    +3     
=======================================
+ Hits         5884     5887    +3     
  Misses        492      492           
  Partials      337      337           

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[didrocks]

That should have been tedious and I’m not eager on the other project to be converted too! Nice work :)