Update dependency webpack-dev-server to v3.11.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack-dev-server	3.11.1 -> 3.11.2

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Release Notes

webpack/webpack-dev-server

### [`v3.11.2`](https://togithub.com/webpack/webpack-dev-server/releases/v3.11.2) [Compare Source](https://togithub.com/webpack/webpack-dev-server/compare/v3.11.1...v3.11.2) ##### [3.11.2](https://togithub.com/webpack/webpack-dev-server/compare/v3.11.1...v3.11.2) (2021-01-13) ##### Bug Fixes - cli arguments for `serve` command ([a5fe337](https://togithub.com/webpack/webpack-dev-server/commit/a5fe3372e306e3c90a5e63e452e3e9ee9a745875))

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