Update dependency chokidar to v2.1.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
chokidar	dependencies	minor	2.0.4 -> 2.1.8

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Release Notes

paulmillr/chokidar

v2.1.8

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v2.1.6

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v2.1.5

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v2.1.4

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v2.1.3

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v2.1.2

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v2.1.1

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v2.1.0

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[codecov]

Codecov Report

Merging #145 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #145   +/-   ##
======================================
  Coverage    81.1%   81.1%           
======================================
  Files          10      10           
  Lines         381     381           
  Branches       60      60           
======================================
  Hits          309     309           
  Misses         64      64           
  Partials        8       8

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