message: test: use npm ci
diff: @@ -8,10 +8,10 @@ node_js:
  - "10.16"
  - "12.7.0"
  install:
  - - npm install
  - - cd packages/serverless-nextjs-plugin && npm install && cd ../../
  - - cd packages/serverless-nextjs-component && npm install && cd ../../
  - - cd integration/app-with-serverless-offline && npm install && cd ../../
  + - npm ci
  + - cd packages/serverless-nextjs-plugin && npm ci && cd ../../
  + - cd packages/serverless-nextjs-component && npm ci && cd ../../
  + - cd integration/app-with-serverless-offline && npm ci && cd ../../
  script:
  - npm run lint
  - npm test
  