chore: remove matrix

.github/workflows/node.js.yml

@@ -11,20 +11,13 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        node-version: [20.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
-
     steps:
     - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v3
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version: 20.x
         cache: 'npm'
     - run: npm ci
     - run: npm run lint --if-present