fix (workflow): setting up node

.github/workflows/build-and-publish.yml

@@ -18,6 +18,11 @@ jobs:
         run: npm run copyfiles
       - name: Change Directory to lib
         run: cd lib
+      - name: Setup Node
+        uses: actions/setup-node@v2
+        with:
+          node-version: '12.x'
+          registry-url: 'https://registry.npmjs.org'
       - name: Publish
         run: npm publish
         env: