Bump mini-css-extract-plugin from 2.9.2 to 2.9.4

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.9.2 to 2.9.4.
- [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/mini-css-extract-plugin@v2.9.2...v2.9.4)

---
updated-dependencies:
- dependency-name: mini-css-extract-plugin
  dependency-version: 2.9.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -30,7 +30,7 @@
     "copy-webpack-plugin": "13.0.0",
     "cross-env": "10.0.0",
     "css-loader": "7.1.2",
-    "mini-css-extract-plugin": "2.9.2",
+    "mini-css-extract-plugin": "2.9.4",
     "postcss": "8.5.6",
     "postcss-loader": "8.1.1",
     "postcss-scss": "4.0.9",