Restore npx playwright install --with-deps to install browsers on gh

Remove postinstall --with-deps so that npm install does not require
root privilege

.github/workflows/ci-testing.yml

@@ -15,6 +15,7 @@ jobs:
         node-version: latest
     - run: sudo apt-get install xvfb
     - run: npm install
+    - run: npx playwright install  --with-deps
     - run: npm install -g grunt-cli
     - run: grunt default
     - run: xvfb-run --auto-servernum -- npx playwright test --grep-invert="popupTabNavigation\.test\.js|layerContextMenuKeyboard\.test\.js"  --workers=1 --retries=3

package.json

@@ -33,7 +33,7 @@
   ],
   "scripts": {
     "test-serve": "node test/server.js",
-    "postinstall": "npx playwright install --with-deps",
+    "postinstall": "npx playwright install",
     "test": "npx playwright test --retries=3 --workers=1"
   },
   "devDependencies": {