fix: Update Node.js version for Windows integration tests from 18.18.2 to 20

The create-next-app package now requires Node.js >=20.9.0, but the test was
using Node.js 18.18.2, causing ENOENT errors during test setup.

Author: celicoo

.github/workflows/build_and_test.yml

@@ -481,7 +481,7 @@ jobs:
 
     uses: ./.github/workflows/build_reusable.yml
     with:
-      nodeVersion: 18.18.2
+      nodeVersion: 20
       afterBuild: |
         node run-tests.js \
           --concurrency 4 \