chore(deps): update dependency puppeteer to v2.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
puppeteer	devDependencies	minor	2.0.0 -> 2.1.0

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Release Notes

puppeteer/puppeteer

### [`v2.1.0`](https://togithub.com/puppeteer/puppeteer/compare/v2.0.0...v2.1.0) [Compare Source](https://togithub.com/puppeteer/puppeteer/compare/v2.0.0...v2.1.0)

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[codecov[bot]]

Codecov Report

Merging #90 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #90   +/-   ##
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  Coverage     100%   100%           
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  Files           2      2           
  Lines          45     45           
  Branches       11     11           
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  Hits           45     45