test: merged pull-request/validate workflow into playwright/test to r…

…educe duplicate setup time and changed to node 20.x

.github/workflows/playwright.yml

@@ -14,12 +14,13 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-node@v4
       with:
-        node-version: '18.x'
+        node-version: '20.x'
         registry-url: 'https://registry.npmjs.org'
         cache: yarn
-        cache-dependency-path: "yarn.lock"
     - name: Install node modules
-      run: yarn install --frozen-lockfile
+      run: yarn --frozen-lockfile --prefer-offline
+    - name: Run linter
+      run: yarn lint
     - name: Run Playwright tests
       run: yarn playwright test
     - uses: actions/upload-artifact@v4