bump version of golangci-lint to 2.1.6

Author: nlopes

.github/workflows/test.yml

@@ -41,7 +41,7 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
         with:
-          version: v1.63.4
+          version: v2.1.6
       - name: Check 'go mod tidy' makes no changes
         run: |
           go mod tidy