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] <[email protected]>

Author: dependabot[bot]

yarn.lock

@@ -8119,9 +8119,9 @@ min-indent@^1.0.0, min-indent@^1.0.1:
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
 mini-css-extract-plugin@^2.6.1:
-  version "2.8.1"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.8.1.tgz#75245f3f30ce3a56dbdd478084df6fe475f02dc7"
-  integrity sha512-/1HDlyFRxWIZPI1ZpgqlZ8jMw/1Dp/dl3P0L1jtZ+zVcHqwPhGwaJwKL00WVgfnBy6PWCde9W65or7IIETImuA==
+  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==
   dependencies:
     schema-utils "^4.0.0"
     tapable "^2.2.1"