Install playwright on GHA

Author: michaelmior

.github/workflows/playwright.yml

@@ -23,6 +23,9 @@ jobs:
       - name: Install dependencies
         run: yarn install --immutable
 
+      - name: Install Playwright
+        run: yarn playwright install
+
       - name: Run tests
         env:
           PLAYWRIGHT_TEST_BASE_URL: https://deploy-preview-${{ github.event.issue.number }}--cambria-project.netlify.app