Revert "Remove Playwright installation step from CI workflow"

This reverts commit 8dc8322.

Author: knowledgecode

.github/workflows/ci.yml

@@ -24,8 +24,11 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Install Playwright browsers
+        run: npx playwright install chromium
+
       - name: Run linter
         run: npm run lint
 
       - name: Run unit tests
-        run: npm test
+        run: npm test