Bump mini-css-extract-plugin from 2.8.0 to 2.8.1 (#1024)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.8.0 to 2.8.1.
- [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-contrib/mini-css-extract-plugin@v2.8.0...v2.8.1)

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

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

Author: dependabot[bot]

package.json

@@ -21,7 +21,7 @@
     "clean-webpack-plugin": "4.0.0",
     "cross-env": "7.0.3",
     "css-loader": "6.10.0",
-    "mini-css-extract-plugin": "2.8.0",
+    "mini-css-extract-plugin": "2.8.1",
     "postcss": "8.4.35",
     "postcss-loader": "8.1.0",
     "postcss-scss": "4.0.9",