Bump puppeteer from 1.20.0 to 2.0.0 (#63)

Bumps [puppeteer](https://github.com/GoogleChrome/puppeteer) from 1.20.0 to 2.0.0.
- [Release notes](https://github.com/GoogleChrome/puppeteer/releases)
- [Commits](puppeteer/puppeteer@v1.20.0...v2.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -43,7 +43,7 @@
     "karma-sauce-launcher": "^2.0.2",
     "karma-spec-reporter": "0.0.32",
     "load-grunt-tasks": "^5.0.0",
-    "puppeteer": "^1.9.0",
+    "puppeteer": "^2.0.0",
     "time-grunt": "^2.0.0"
   }
 }