Use npm ci

Author: jafeltra

.github/workflows/ci-workflow.yaml

@@ -11,7 +11,7 @@ jobs:
     - uses: actions/setup-node@v1
       with:
         node-version: '12.x'
-    - run: npm install
+    - run: npm ci
     - run: npm run lint
       env:
         CI: true
@@ -26,7 +26,7 @@ jobs:
     - uses: actions/setup-node@v1
       with:
         node-version: '12.x'
-    - run: npm install
+    - run: npm ci
     - run: npm test
       env:
         CI: true