reverting back to previous successful build

.github/workflows/explorer_preview.yml

@@ -9,21 +9,9 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
-       - uses: actions/checkout@v2
-#          with:
-#           ref: ${{ github.event.pull_request.head.sha }}
-       - uses: actions/setup-node@v2
-         with:
-           node-version: '14'
-           cache: 'npm'
-           cache-dependency-path: explorer/package-lock.json
-       - run: npm i -g npm@7
-       - run: npm ci
-       - run: npm run format
-       - run: npm run build
-       - run: npm run test
-       - uses: amondnet/vercel-action@v20
-         with:
+      - uses: actions/checkout@v2
+      - uses: amondnet/vercel-action@v20
+        with:
           vercel-token: ${{ secrets.VERCEL_TOKEN }} # Required
           github-token: ${{ secrets.GITHUB_TOKEN }} #Optional 
           vercel-org-id: ${{ secrets.ORG_ID}}  #Required