Bump mini-css-extract-plugin from 1.3.3 to 1.3.4

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 1.3.3 to 1.3.4.
- [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-contrib/mini-css-extract-plugin@v1.3.3...v1.3.4)

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

yarn.lock

@@ -6048,9 +6048,9 @@ mimic-fn@^2.1.0:
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
 mini-css-extract-plugin@^1.0.0:
-  version "1.3.3"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.3.tgz#7802e62b34199aa7d1a62e654395859a836486a0"
-  integrity sha512-7lvliDSMiuZc81kI+5/qxvn47SCM7BehXex3f2c6l/pR3Goj58IQxZh9nuPQ3AkGQgoETyXuIqLDaO5Oa0TyBw==
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.4.tgz#706e69632cdcdb8b15bf8e638442a0dba304a9c8"
+  integrity sha512-dNjqyeogUd8ucUgw5sxm1ahvSfSUgef7smbmATRSbDm4EmNx5kQA6VdUEhEeCKSjX6CTYjb5vxgMUvRjqP3uHg==
   dependencies:
     loader-utils "^2.0.0"
     schema-utils "^3.0.0"