golangci-lint 2.13 fails on files 2.12.2 passes

[lexfrei]

CI pins golangci-lint to v2.12.2 in .github/workflows/pr.yml and is green. 2.13.2 reports 52 issues, all in files that have not changed:

• 50 exhaustruct_v5 across pkg/applycheck/{diff,refs,validate}_test.go: struct literals that leave fields unset
• 1 nolintlint in pkg/engine/engine.go:938: the goconst half of a //nolint:gochecknoglobals,goconst directive is unused
• 1 modernize in pkg/engine/helm/doc.go:24: canonical import path comment ignored in module mode

Nothing is failing today. It goes red when the pin moves, which renovate does on its own.