Update go.yml

Author: lyonnee

.github/workflows/go.yml

@@ -28,6 +28,7 @@ jobs:
       run: go test -coverprofile=coverage.txt
 
     - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
+      uses: codecov/codecov-action@v4.0.1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        slug: lyonnee/hmap