feat: Add npm audit fix step to GitHub Actions wor

.github/workflows/main.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Use Node.js
+      uses: actions/setup-node@v1
+      with:
+        node-version: '12.x'
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Fix vulnerable dependencies
+      run: npm audit fix
+
+    - name: Run tests
+      run: npm run test