release-1.33: Bump to go 1.26.8

[tsaarni]

• Updated Go to the 1.26 track for the latest stdlib security fixes
• Updated golangci-lint for Go 1.26 compatibility
• Disabled new / updated linters to prevent CI failures, without unnecessary changing stable code in the release branch

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.33%. Comparing base (123c308) to head (b064e52).

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.33    #7713   +/-   ##
=============================================
  Coverage         82.33%   82.33%           
=============================================
  Files               130      130           
  Lines             15653    15653           
=============================================
  Hits              12888    12888           
  Misses             2481     2481           
  Partials            284      284           

Files with missing lines	Coverage Δ
pkg/config/parameters.go	87.10% <100.00%> (ø)

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