chore(ci): another sad attempt to fix travis deployment (#3769)
chore(ci): another sad attempt to fix travis deployment (#3769)

Apparently all the issues happen because we switched from travis.org
to travis.com. So this enctryption key was generated with:

```sh
travis encrypt <KEY> --add deploy.api_key --com --repo
GoogleChrome/puppeteer
```
puppeteer/puppeteer,GoogleChrome/puppeteer,puppeteer/puppeteer,puppeteer/puppeteer,GoogleChrome/puppeteer,GoogleChrome/puppeteer,puppeteer/puppeteer