[PATCH] update golangci-lint configuration

[aztechian]

• migrate to golangci-lint v2
• enable new linters
• update configuration
• find outstanding issues and fix them to not accumulate new things over time

[github-actions]

Test Results

219 tests  ±0   219 ✅ ±0   0s ⏱️ ±0s
  3 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit a054b0c. ± Comparison against base commit 68c15f2.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Attention: Patch coverage is 24.00000% with 19 lines in your changes missing coverage. Please review.

Project coverage is 64.22%. Comparing base (68c15f2) to head (a054b0c).

Files with missing lines	Patch %	Lines
internal/bridgr/git.go	16.66%	5 Missing ⚠️
internal/bridgr/ruby.go	0.00%	3 Missing ⚠️
internal/bridgr/docker.go	33.33%	2 Missing ⚠️
internal/bridgr/file.go	33.33%	2 Missing ⚠️
internal/bridgr/python.go	0.00%	2 Missing ⚠️
internal/bridgr/yum.go	0.00%	2 Missing ⚠️
cmd/bridgr/main.go	0.00%	1 Missing ⚠️
internal/bridgr/helm.go	0.00%	1 Missing ⚠️
internal/bridgr/server.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #450   +/-   ##
=======================================
  Coverage   64.22%   64.22%           
=======================================
  Files          14       14           
  Lines         984      984           
=======================================
  Hits          632      632           
  Misses        330      330           
  Partials       22       22           

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