Bump mini-css-extract-plugin from 2.8.1 to 2.9.2

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.8.1 to 2.9.2.
- [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...v2.9.2)

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

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

package.json

@@ -61,7 +61,7 @@
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.6.3",
     "jest": "^26.6.3",
-    "mini-css-extract-plugin": "^2.8.1",
+    "mini-css-extract-plugin": "^2.9.2",
     "simple-keyboard": "3.8.12",
     "style-loader": "^4.0.0",
     "terser-webpack-plugin": "^5.3.10",