Bump mini-css-extract-plugin from 2.9.0 to 2.9.1

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.9.0 to 2.9.1.
- [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](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v2.9.0...v2.9.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -298,7 +298,7 @@
     "jest-extended": "^4.0.2",
     "jest-json-schema": "^6.1.0",
     "jest-watch-typeahead": "^2.2.2",
-    "mini-css-extract-plugin": "^2.9.0",
+    "mini-css-extract-plugin": "^2.9.1",
     "mock-express-request": "^0.2.0",
     "mock-express-response": "^0.3.0",
     "node-fetch": "^3.3.2",

yarn.lock

@@ -7459,10 +7459,10 @@ min-indent@^1.0.0, min-indent@^1.0.1:
   resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
-mini-css-extract-plugin@^2.9.0:
-  version "2.9.0"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.9.0.tgz#c73a1327ccf466f69026ac22a8e8fd707b78a235"
-  integrity sha512-Zs1YsZVfemekSZG+44vBsYTLQORkPMwnlv+aehcxK/NLKC+EGhDB39/YePYYqx/sTk6NnYpuqikhSn7+JIevTA==
+mini-css-extract-plugin@^2.9.1:
+  version "2.9.1"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.9.1.tgz#4d184f12ce90582e983ccef0f6f9db637b4be758"
+  integrity sha512-+Vyi+GCCOHnrJ2VPS+6aPoXN2k2jgUzDRhTFLjjTBn23qyXJXkjUWQgTL+mXpF5/A8ixLdCc6kWsoeOjKGejKQ==
   dependencies:
     schema-utils "^4.0.0"
     tapable "^2.2.1"