chore(deps-dev): Bump mini-css-extract-plugin from 2.8.1 to 2.9.0

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.8.1 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@v2.8.1...v2.9.0)

---
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

@@ -26,7 +26,7 @@
   "homepage": "https://github.com/rubygems/bundler-site#readme",
   "devDependencies": {
     "css-loader": "^7.1.1",
-    "mini-css-extract-plugin": "^2.8.1",
+    "mini-css-extract-plugin": "^2.9.0",
     "prettier": "3.2.5",
     "sass": "^1.75.0",
     "sass-loader": "^14.2.0",