Bump extract-text-webpack-plugin from 3.0.0 to 3.0.2

Bumps [extract-text-webpack-plugin](https://github.com/webpack-contrib/extract-text-webpack-plugin) from 3.0.0 to 3.0.2.
- [Release notes](https://github.com/webpack-contrib/extract-text-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/extract-text-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/extract-text-webpack-plugin@v3.0.0...v3.0.2)

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

package.json

@@ -47,7 +47,7 @@
     "babel-preset-env": "1.6.0",
     "classnames": "2.2.5",
     "css-loader": "0.28.4",
-    "extract-text-webpack-plugin": "3.0.0",
+    "extract-text-webpack-plugin": "3.0.2",
     "jest": "^20.0.4",
     "normalize.css": "7.0.0",
     "preact": "8.2.1",

yarn.lock

@@ -1800,9 +1800,10 @@ extglob@^0.3.1:
   dependencies:
     is-extglob "^1.0.0"
 
-extract-text-webpack-plugin@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/extract-text-webpack-plugin/-/extract-text-webpack-plugin-3.0.0.tgz#90caa7907bc449f335005e3ac7532b41b00de612"
+extract-text-webpack-plugin@3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extract-text-webpack-plugin/-/extract-text-webpack-plugin-3.0.2.tgz#5f043eaa02f9750a9258b78c0a6e0dc1408fb2f7"
+  integrity sha512-bt/LZ4m5Rqt/Crl2HiKuAl/oqg0psx1tsTLkvWbJen1CtD+fftkZhMaQ9HOtY2gWsl2Wq+sABmMVi9z3DhKWQQ==
   dependencies:
     async "^2.4.1"
     loader-utils "^1.1.0"