Update deprecated packages for testing

Author: bkrem

package-lock.json

@@ -70,8 +70,8 @@
     "jsdoc-to-markdown": "^3.0.0",
     "postcss-loader": "^1.3.3",
     "react": "^15.6.0",
-    "react-addons-test-utils": "^15.5.1",
     "react-dom": "^15.6.0",
+    "react-test-renderer": "^15.5.4",
     "regenerator-runtime": "^0.10.5",
     "rimraf": "^2.6.1",
     "style-loader": "^0.17.0",