chore(gh-actions): copy saved artifacts to lib

Author: Natalie

.github/workflows/run-test.yml

@@ -56,6 +56,8 @@ jobs:
       with:
         name: drafter
 
+
+    - run: cp -n -R /Users/runner/work/drafter.js/drafter.js/* /lib
     - run: npm install
     - uses: actions/setup-python@v2
       with: