chore(deps): update dependency cpy-cli to v3

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
cpy-cli	devDependencies	major	^2.0.0 -> ^3.0.0

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Release Notes

sindresorhus/cpy-cli

### [`v3.0.0`](https://togithub.com/sindresorhus/cpy-cli/releases/v3.0.0) [Compare Source](https://togithub.com/sindresorhus/cpy-cli/compare/v2.0.0...v3.0.0) ##### Breaking - Require Node.js 8 [`a31ef18`](https://togithub.com/sindresorhus/cpy-cli/commit/a31ef18) - Throw if the given source file does not exist [sindresorhus/cpy@`c4014c0`](https://togithub.com/sindresorhus/cpy/commit/c4014c0e79abbba7e8ce9c205dbeeab98221d347)

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[codecov[bot]]

Codecov Report

Merging #387 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #387   +/-   ##
======================================
  Coverage    97.1%   97.1%           
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  Files           2       2           
  Lines         449     449           
  Branches       37      37           
======================================
  Hits          436     436           
  Misses         13      13

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