[stable-4.6] Bump mini-css-extract-plugin from 2.7.7 to 2.9.0 (#5071)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.7.7 to 2.9.0.
- [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@v2.7.7...v2.9.0)

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

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

package.json

@@ -50,7 +50,7 @@
         "eslint-plugin-react": "^7.34.1",
         "fork-ts-checker-webpack-plugin": "^9.0.2",
         "html-webpack-plugin": "^5.6.0",
-        "mini-css-extract-plugin": "^2.7.7",
+        "mini-css-extract-plugin": "^2.9.0",
         "npm-run-all": "^4.1.5",
         "postcss": "^8.4.32",
         "prettier": "^3.2.5",