revert to v3

Author: nihui

.github/workflows/test-coverage.yml

@@ -53,7 +53,7 @@ jobs:
         lcov -r lcov.info '*/build/*' -o lcov.info
         lcov --list lcov.info
     - name: codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v3
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: build/lcov.info