ci: update codecov-action to v2 (#115)

Author: snitin315

.github/workflows/nodejs.yml

@@ -91,6 +91,6 @@ jobs:
         run: npm run test:coverage -- --ci
 
       - name: Submit coverage data to codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         with:
           token: ${{ secrets.CODECOV_TOKEN }}