Update dependency chokidar to v3 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
chokidar	devDependencies	major	2.1.5 -> 3.0.0	source

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Release Notes

paulmillr/chokidar

### [`v3.0.0`](https://togithub.com/paulmillr/chokidar/releases/3.0.0) [Compare Source](https://togithub.com/paulmillr/chokidar/compare/2.1.5...3.0.0) Massive CPU & RAM consumption improvements. 17x package & deps size reduction. Node 8+-only

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