Use workflow_run event to deploy pull request previews

.github/workflows/publish.yml

@@ -9,11 +9,10 @@ jobs:
   publish-npm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
         with:
-          node-version: 16
-          registry-url: https://registry.npmjs.org/
+          node-version: '16'
       - name: Install dependencies
         run: npm ci
       - name: Publish