Bump golangci-lint to v2.12.2

[thomasmaas]

Upgrade golangci-lint from v2.7.2 to v2.12.2 and pin install script to version tag to avoid checksum mismatches.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2216412a-500b-4967-b316-86443278d7b3

📥 Commits

Reviewing files that changed from the base of the PR and between 08bb9bc and 0e1ca26.

📒 Files selected for processing (5)

• Makefile
• pkg/helpers/apimachinery_status_conditions.go
• pkg/limitador/deployment_options.go
• pkg/observability/otel.go
• pkg/observability/tracer.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bump-golangci-lint-v2.12.2

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.63%. Comparing base (08bb9bc) to head (0e1ca26).

Files with missing lines	Patch %	Lines
pkg/observability/otel.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #263      +/-   ##
==========================================
- Coverage   77.89%   75.63%   -2.26%     
==========================================
  Files          18       18              
  Lines        1131     1137       +6     
==========================================
- Hits          881      860      -21     
- Misses        202      220      +18     
- Partials       48       57       +9     

Flag	Coverage Δ
integration	70.97% <85.00%> (-2.77%)	⬇️
unit	46.96% <65.00%> (-0.11%)	⬇️

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

Components	Coverage Δ
api/v1alpha1 (u)	91.48% <ø> (ø)
pkg/helpers (u)	80.95% <100.00%> (ø)
pkg/log (u)	94.73% <ø> (ø)
pkg/reconcilers (u)	63.12% <ø> (-1.42%)	⬇️
pkg/limitador (u)	98.28% <100.00%> (+<0.01%)	⬆️
controllers (i)	69.45% <ø> (-6.63%)	⬇️
pkg/upgrades	∅ <ø> (∅)

Files with missing lines	Coverage Δ
pkg/helpers/apimachinery_status_conditions.go	75.00% <100.00%> (ø)
pkg/limitador/deployment_options.go	100.00% <100.00%> (ø)
pkg/observability/tracer.go	94.28% <100.00%> (+0.16%)	⬆️
pkg/observability/otel.go	0.00% <0.00%> (ø)

... and 3 files with indirect coverage changes

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[eguzki]

nice one

LGTM