chore(deps): update dependency webpack-dev-server to v3.10.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
webpack-dev-server	devDependencies	patch	3.10.1 -> 3.10.2

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Release Notes

webpack/webpack-dev-server

### [`v3.10.2`](https://togithub.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md#​3102httpsgithubcomwebpackwebpack-dev-servercomparev3100v3102-2020-01-31) [Compare Source](https://togithub.com/webpack/webpack-dev-server/compare/v3.10.1...v3.10.2)

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