ci: use -race flag in go test (#27)

Author: reugn

.github/workflows/build.yml

@@ -24,7 +24,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Run coverage
-      run: go test . -coverprofile=coverage.out -covermode=atomic
+      run: go test -race ./... -coverprofile=coverage.out -covermode=atomic
 
     - name: Upload coverage to Codecov
       if: ${{ matrix.go-version == '1.20.x' }}