ci: install playwright browsers during ci

Author: limulus

.github/workflows/cd.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [ '22' ]
+        node: ['20', '22']
     name: verify using node v${{ matrix.node }}
     steps:
       - uses: actions/checkout@v4
@@ -18,6 +18,7 @@ jobs:
       - run: npm ci
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GPR_READ_TOKEN }}
+      - run: npx playwright install --with-deps --only-shell chromium
       - run: npm run verify
       - uses: actions/upload-artifact@v4
         if: ${{ always() }}