Update npm-test.yml

.github/workflows/npm-test.yml

@@ -13,11 +13,8 @@ on:
 
 jobs:      
   test:
-    name: Test and ${{ matrix.os }}
+    name: Test
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macOS-latest]
         
     steps:
       - name: Checkout