build(deps-dev): bump mini-css-extract-plugin from 2.2.2 to 2.3.0 (webpack#5449)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.2.2 to 2.3.0.
- [Release notes](https://github.com/webpack-contrib/mini-css-extract-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack/mini-css-extract-plugin@v2.2.2...v2.3.0)

---
updated-dependencies:
- dependency-name: mini-css-extract-plugin
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -105,7 +105,7 @@
     "lodash": "^4.17.21",
     "markdownlint": "^0.24.0",
     "markdownlint-cli": "^0.28.1",
-    "mini-css-extract-plugin": "^2.2.2",
+    "mini-css-extract-plugin": "^2.3.0",
     "mkdirp": "^1.0.4",
     "modularscale-sass": "^3.0.3",
     "node-fetch": "^2.6.1",

yarn.lock

@@ -8472,10 +8472,10 @@ mini-create-react-context@^0.4.0:
     "@babel/runtime" "^7.5.5"
     tiny-warning "^1.0.3"
 
-mini-css-extract-plugin@^2.2.2:
-  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.2.2.tgz#df22f16bf43173050c6d652fa7d035318c310e04"
-  integrity sha512-eUjQ/q1rQIeHWgIx7ny/DNgXHcMXHdBwgrZQK7Ev8dbR+HxhroFM2Cb6kMiswOYaq05IRJhPuQqXWUABIjjA3g==
+mini-css-extract-plugin@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.3.0.tgz#87515f185533752944d753ac7216fc876779dafe"
+  integrity sha512-uzWaOwC+gJrnKbr23J1ZRWx/Wd9W9Ce1mKPlsBGBV/r8zG7/G7oKMxGmxbI65pVGbae2cR7CUx9Ulk0HQt8BfQ==
   dependencies:
     schema-utils "^3.1.0"