Bump mini-css-extract-plugin from 1.6.2 to 2.4.5

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 1.6.2 to 2.4.5.
- [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/v1.6.2...v2.4.5)

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

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

package.json

@@ -48,7 +48,7 @@
     "eslint-webpack-plugin": "^3.1.1",
     "file-loader": "^6.2.0",
     "lato-font": "^3.0.0",
-    "mini-css-extract-plugin": "^1.4.0",
+    "mini-css-extract-plugin": "^2.4.5",
     "node-sass": "^7.0.1",
     "postcss": "^8.2.7",
     "postcss-loader": "^6.2.1",