golangci-lint version update & minor fixes

[olegbespalov]

What?

Update the golangci lint to the latest version and fix some nolint (linter is not used) issues.

Why?

The reason behind this is a minor inconvenience after the changes for the deepguard linter that caused inline reporting of the blocked package.

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make ci-like-lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

[codecov-commenter]

Codecov Report

Merging #3177 (5bc644a) into master (a2fe0a8) will decrease coverage by 0.04%.
The diff coverage is n/a.

❗ Current head 5bc644a differs from pull request most recent head f408018. Consider uploading reports for the commit f408018 to get more accurate results

@@            Coverage Diff             @@
##           master    #3177      +/-   ##
==========================================
- Coverage   72.82%   72.78%   -0.04%     
==========================================
  Files         255      253       -2     
  Lines       19611    19606       -5     
==========================================
- Hits        14281    14270      -11     
- Misses       4433     4435       +2     
- Partials      897      901       +4     

Flag	Coverage Δ
ubuntu	72.78% <ø> (+0.02%)	⬆️
windows	?

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

Impacted Files	Coverage Δ
js/bundle.go	85.90% <ø> (ø)
js/compiler/compiler.go	63.52% <ø> (ø)
js/modules/k6/k6.go	98.24% <ø> (ø)
js/summary.go	89.87% <ø> (ø)
lib/executor/base_config.go	84.21% <ø> (ø)
lib/executor/constant_arrival_rate.go	96.68% <ø> (ø)
lib/executor/ramping_arrival_rate.go	96.55% <ø> (ø)
lib/netext/httpext/response.go	100.00% <ø> (ø)
lib/netext/httpext/transport.go	97.08% <ø> (ø)
lib/runtime_options.go	100.00% <ø> (ø)

... and 9 files with indirect coverage changes