Update "@opuscapita/react-showroom-client" version

Author: Kirill Volkovich

package.json

@@ -38,7 +38,7 @@
   },
   "devDependencies": {
     "@opuscapita/npm-scripts": "2.0.0-beta.2",
-    "@opuscapita/react-showroom-client": "1.3.0-beta.4",
+    "@opuscapita/react-showroom-client": "1.3.0-beta.6",
     "@opuscapita/react-showroom-server": "1.3.0",
     "autoprefixer": "6.7.6",
     "babel-cli": "7.0.0-alpha.12",