chore: simplify Node.js setup in CI workflow by removing matrix strategy

Author: uidev1116

.github/workflows/nodejs.yml

@@ -7,16 +7,12 @@ jobs:
 
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [24.x]
-
     steps:
     - uses: actions/checkout@v7
-    - name: Use Node.js ${{ matrix.node-version }}
+    - name: Use Node.js
       uses: actions/setup-node@v7
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version-file: '.node-version'
     - name: Clean install dependencies
       run: |
         npm install