chore(ci): update golangci-lint and fix script paths

- bump golangci-lint-action to v7 and version to v2.1.6
- correct directory paths in `smoke_test.sh`
- update `test` and `test-ci` targets in Makefile

.gitea/workflows/main.yml

@@ -47,8 +47,6 @@ jobs:
         with:
           version: v2.1.6
           install-mode: goinstall
-        env:
-          GOTOOLCHAIN: local
 
   test-linux:
     name: Test (Linux)