Update dependencies

postcss.config.js

@@ -1,7 +1,7 @@
 module.exports = {
   plugins: [
     require("postcss-import"),
-    require("postcss-cssnext")({warnForDuplicates: false}),
+    require("postcss-cssnext")({ warnForDuplicates: false }),
     require("cssnano")
   ]
-}
+};