Review app : use latest Node.js LTS

Specify the Node.js version to use (latest LTS branch), as recommended in the [GitHub Actions documentation](https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs#specifying-the-nodejs-version).

.github/workflows/review-app.yml

@@ -37,6 +37,10 @@ jobs:
         run: |
           ls ${{ github.workspace }}
       - run: echo "🍏 This job's status is ${{ job.status }}."
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20.x'
       - name: install clever-tools
         run: npm install -g clever-tools
       - name: Create app and configure app
@@ -81,6 +85,10 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.ref }}
           fetch-depth: 0  
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20.x'
       - name: install clever-tools
         run: npm install -g clever-tools
       - name: Link and update app
@@ -109,6 +117,10 @@ jobs:
       pull-requests: write
     if: always() && github.event_name == 'pull_request_target' && github.event.action == 'closed'
     steps:
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20.x'
       - name: install clever-tools
         run: npm install -g clever-tools
       - name: Delete app