ci: fix codecov upload job

Author: felixpy

.circleci/config.yml

@@ -13,7 +13,7 @@ jobs:
             - run: npm install
             - run: npm run test
       - codecov/upload:
-          file: coverage
+          file: coverage/coverage-final.json
           conf: codecov.yml
       - store_artifacts:
           path: coverage