fix(ci): scope playwright install to a package that has it as dependency

Amp-Thread-ID: https://ampcode.com/threads/T-019d4701-dfdb-73c6-a876-29ab299f63cf
Co-authored-by: Amp <amp@ampcode.com>

Author: fi3ework

.github/workflows/ci.yaml

@@ -32,7 +32,7 @@ jobs:
         run: pnpm install
 
       - name: Install Playwright browsers
-        run: pnpm exec playwright install --with-deps chromium
+        run: pnpm --filter @rstest-example/browser-locator exec playwright install --with-deps chromium
 
       - name: Build Rspack
         run: |