Upgrade linter - fix found issues - use go1.20

[jotak]

No description provided.

[jotak]

here, using the same config as in the operator. The removed modules were anyway disabled in golangci-lint

[codecov]

Codecov Report

Merging #354 (32fb8ba) into main (d22f0ed) will not change coverage.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##             main     #354   +/-   ##
=======================================
  Coverage   58.05%   58.05%           
=======================================
  Files         151      151           
  Lines        6690     6690           
  Branches      800      800           
=======================================
  Hits         3884     3884           
  Misses       2589     2589           
  Partials      217      217           

Flag	Coverage Δ
uitests	59.00% <ø> (ø)
unittests	55.39% <66.66%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/handler/csv/loki_csv.go	0.00% <0.00%> (ø)
pkg/handler/status.go	40.00% <100.00%> (ø)
pkg/kubernetes/auth/check_auth.go	85.24% <100.00%> (ø)

[OlivierCazade]

LGTM

[jotak]

/approve

[openshift-ci]

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