Bump mini-css-extract-plugin from 1.6.2 to 2.1.0

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 1.6.2 to 2.1.0.
- [Release notes](https://github.com/webpack-contrib/mini-css-extract-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/mini-css-extract-plugin/blob/v2.1.0/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v1.6.2...v2.1.0)

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

package.json

@@ -35,7 +35,7 @@
     "extract-text-webpack-plugin": "^3.0.2",
     "html-webpack-plugin": "^5.3.1",
     "imagemin-webpack-plugin": "^2.4.2",
-    "mini-css-extract-plugin": "^1.6.0",
+    "mini-css-extract-plugin": "^2.1.0",
     "node-sass": "^4.14.1",
     "postcss": "^8.3.4",
     "postcss-loader": "^6.1.0",