fix(ci): use latest golangci-lint to support current Go versions

v1.62 was built with Go 1.23 and fails on Go 1.26 stdlib typecheck.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: elucidsoft

.github/workflows/ci.yml

@@ -40,4 +40,4 @@ jobs:
 
       - uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.62
+          version: latest