Update build.yml

.github/workflows/build.yml

@@ -1,18 +1,13 @@
 name: build
-
 on: [push]
-
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '20.x'
+          node-version: '18.x'
       - run: npm ci
       - run: npm run build --if-present
-      - run: npm test