Use node-version-file in test workflow

.github/workflows/test.yml

@@ -14,23 +14,17 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
-      matrix:
-        node: ['16', '18', '20']
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node }}
+          node-version-file: '.nvmrc'
           cache: 'npm'
-
       - name: Install dependencies
         run: npm ci
-
       - name: Lint
         run: npm run lint
-
       - name: Test
         run: npm test