Bump mini-css-extract-plugin from 2.1.0 to 2.3.0

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.1.0 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-contrib/mini-css-extract-plugin@v2.1.0...v2.3.0)

---
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

@@ -59,7 +59,7 @@
     "firebase": "^9.0.2",
     "husky": "~7.0.1",
     "lint-staged": "^11.1.2",
-    "mini-css-extract-plugin": "~2.1.0",
+    "mini-css-extract-plugin": "~2.3.0",
     "nyc": "~15.1.0",
     "postcss": "~8.2.13",
     "postcss-loader": "^6.1.1",