Update dependency mini-css-extract-plugin to v2.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mini-css-extract-plugin	2.0.0 -> 2.1.0

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Release Notes

webpack-contrib/mini-css-extract-plugin

### [`v2.1.0`](https://togithub.com/webpack-contrib/mini-css-extract-plugin/releases/v2.1.0) [Compare Source](https://togithub.com/webpack-contrib/mini-css-extract-plugin/compare/v2.0.0...v2.1.0) ##### Features - support the `pathinfo` option ([#​783](https://togithub.com/webpack-contrib/mini-css-extract-plugin/issues/783)) ([a37713f](https://togithub.com/webpack-contrib/mini-css-extract-plugin/commit/a37713f53bcecb9efc3f8a4d389c6274dae0bc85))

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Configuration

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