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:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

packages/kolibri-tools/package.json

@@ -55,7 +55,7 @@
     "kolibri-format": "^1.0.0",
     "launch-editor-middleware": "^2.11.1",
     "lodash": "^4.17.21",
-    "mini-css-extract-plugin": "^2.9.2",
+    "mini-css-extract-plugin": "^2.9.4",
     "node-sass": "9.0.0",
     "postcss-loader": "^8.1.1",
     "process": "^0.11.10",

yarn.lock

@@ -8853,10 +8853,10 @@ mini-create-react-context@^0.4.0:
     "@babel/runtime" "^7.12.1"
     tiny-warning "^1.0.3"
 
-mini-css-extract-plugin@^2.9.2:
-  version "2.9.2"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.9.2.tgz#966031b468917a5446f4c24a80854b2947503c5b"
-  integrity sha512-GJuACcS//jtq4kCtd5ii/M0SZf7OZRH+BxdqXZHaJfb8TJiVl+NgQRPwiYt2EuqeSkNydn/7vP+bcE27C5mb9w==
+mini-css-extract-plugin@^2.9.4:
+  version "2.9.4"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.9.4.tgz#cafa1a42f8c71357f49cd1566810d74ff1cb0200"
+  integrity sha512-ZWYT7ln73Hptxqxk2DxPU9MmapXRhxkJD6tkSR04dnQxm8BGu2hzgKLugK5yySD97u/8yy7Ma7E76k9ZdvtjkQ==
   dependencies:
     schema-utils "^4.0.0"
     tapable "^2.2.1"