Update validation.yaml

.github/workflows/validation.yaml

@@ -10,29 +10,22 @@ jobs:
 
     steps:
       - name: Checkout wot-testing
-        uses: actions/checkout@v2
-
-      - name: Checkout thingweb-playground
-        uses: actions/checkout@v2
-        with:
-          repository: thingweb/thingweb-playground
-          path: thingweb-playground
+        uses: actions/checkout@v4
 
       - name: Setup Node.js                         
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4.1.0
         with:
-          node-version: '15'       
-
-      - name: Use lerna
-        run: npm install -g [email protected]
-
-      - name: Bootstrap
-        working-directory: thingweb-playground
-        run: lerna bootstrap --no-ci
+          node-version: '20'
 
+      - name: Create empty folder
+        run: npm init -y
+
+      - name: Install Playground CLI
+        run: npm i @thing-description-playground/cli
+
       - name: Run validation script on all new matching files
         env:
-          VALIDATION_SCRIPT: thingweb-playground/packages/cli/index.js
+          VALIDATION_SCRIPT: node_modules/@thing-description-playground/cli/index.js
           PATTERN: "*.td.jsonld" 
         run: |
           # Get the list of changed files