chore(deps-dev): bump mini-css-extract-plugin from 0.8.2 to 0.9.0

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 0.8.2 to 0.9.0.
- [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](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v0.8.2...v0.9.0)

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

package.json

@@ -56,7 +56,7 @@
         "exports-loader": "^0.7.0",
         "file-loader": "^5.0.2",
         "git-revision-webpack-plugin": "^3.0.3",
-        "mini-css-extract-plugin": "0.8.2",
+        "mini-css-extract-plugin": "0.9.0",
         "node-sass": "^4.12.0",
         "postcss-loader": "^3.0.0",
         "prettier": "^1.18.2",

yarn.lock

@@ -5470,10 +5470,10 @@ mini-css-extract-plugin@0.6.0:
     schema-utils "^1.0.0"
     webpack-sources "^1.1.0"
 
-mini-css-extract-plugin@0.8.2:
-  version "0.8.2"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.8.2.tgz#a875e169beb27c88af77dd962771c9eedc3da161"
-  integrity sha512-a3Y4of27Wz+mqK3qrcd3VhYz6cU0iW5x3Sgvqzbj+XmlrSizmvu8QQMl5oMYJjgHOC4iyt+w7l4umP+dQeW3bw==
+mini-css-extract-plugin@0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.9.0.tgz#47f2cf07aa165ab35733b1fc97d4c46c0564339e"
+  integrity sha512-lp3GeY7ygcgAmVIcRPBVhIkf8Us7FZjA+ILpal44qLdSu11wmjKQ3d9k15lfD7pO4esu9eUIAW7qiYIBppv40A==
   dependencies:
     loader-utils "^1.1.0"
     normalize-url "1.9.1"