add npm audit

.github/workflows/run_test.yml

@@ -7,23 +7,20 @@ on:
 jobs:
   build:
 
-    runs-on: macos-latest
-
-    strategy:
-      matrix:
-        node-version: [12.x]
+    runs-on: ubuntu-latest
 
     steps:
     - name: Clone and checkout branch
       uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
+    - name: Set up Node.js version
       uses: actions/setup-node@v1
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version: '12.x'
     - name: Install dependencies
       run: npm install
     - run: npm run build --if-present
     - name: Run the test
       run: npm test
+    - run: npm audit
       env:
         CI: true