ci: upgrade action of codecov to v3 (ckb-js#621)

Author: Keith-CY

.github/workflows/tests.yml

@@ -51,7 +51,6 @@ jobs:
 
       - name: Upload codecov
         if: matrix.os == 'macos-latest' && matrix.node == '18'
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true