ci: reduce playwright install time (#22)

Reduce playwright install time, only `chromium` is required.

See: web-infra-dev/rsbuild#3995

Author: colinaaa

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
           cache: "pnpm"
 
       - name: Install Dependencies
-        run: pnpm install && npx playwright install
+        run: pnpm install && npx playwright install chromium
 
       - name: Run Test
         run: pnpm run test