fix(ci): address linter issues

[wass3rw3rk]

using golangci config from go-vela/server for consistency and addressing linter feedback

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 13.41%. Comparing base (6c73b41) to head (c0b363c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #163   +/-   ##
=======================================
  Coverage   13.41%   13.41%           
=======================================
  Files           8        8           
  Lines         492      492           
=======================================
  Hits           66       66           
  Misses        423      423           
  Partials        3        3           

Files	Coverage Δ
cmd/vela-s3-cache/main.go	0.00% <ø> (ø)
cmd/vela-s3-cache/plugin.go	21.31% <ø> (ø)
cmd/vela-s3-cache/rebuild.go	29.41% <ø> (ø)
cmd/vela-s3-cache/restore.go	18.36% <ø> (ø)
version/version.go	0.00% <ø> (ø)