ci(deploy): run gh-pages command after successfully publishing

Author: Brandon Carroll

.travis.yml

@@ -11,13 +11,12 @@ install:
   - npm i
   # as requested by the React team :)
   # https://reactjs.org/blog/2019/10/22/react-release-channels.html#using-the-next-channel-for-integration-testing
-  - if [ "$TRAVIS_EVENT_TYPE" = "cron" ]; then npm install react@next react-dom@next; fi
-script:
-  - npm run lint
-  - npm run test
+  - if [ "$TRAVIS_EVENT_TYPE" = "cron" ]; then npm update react@next react-dom@next; fi
+script: npm run lint && npm run test
 jobs:
   include:
     - stage: release
       if: branch = master AND type != pull_request
       node_js: 10
       script: npm run semantic-release
+      deploy: npm run deploy