Remove strategy matrix and use Node.js LTS

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -10,18 +10,14 @@ jobs:
   test-lint-build:
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [20, 22]
-    
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Setup Node.js ${{ matrix.node-version }}
+      - name: Setup Node.js LTS
         uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 'lts/*'
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4