Bump mini-css-extract-plugin from 2.3.0 to 2.4.3

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.3.0 to 2.4.3.
- [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](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v2.3.0...v2.4.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -174,7 +174,7 @@
     "jsdom": "^16.6.0",
     "json-loader": "^0.5.7",
     "listr": "^0.14.3",
-    "mini-css-extract-plugin": "^2.3.0",
+    "mini-css-extract-plugin": "^2.4.3",
     "node-loader": "^2.0.0",
     "node-sass": "^6.0.1",
     "prettier": "^2.4.1",

yarn.lock

@@ -8933,10 +8933,10 @@ min-indent@^1.0.0:
   resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
-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==
+mini-css-extract-plugin@^2.4.3:
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.4.3.tgz#be742943c192b028645d4389084ef187615fff82"
+  integrity sha512-zekavl9mZuGyk7COjsfFY/f655AX61EKE0AthXPrmDk+oZyjZ9WzO4WPjXnnO9xl8obK2kmM6rAQrBEmk+WK1g==
   dependencies:
     schema-utils "^3.1.0"