chore(package): update jsdom to version 16.1.0

Closes #30

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-uglify": "^4.0.0",
     "grunt-release-it": "^1.0.1",
-    "jsdom": "^13.0.0",
+    "jsdom": "^16.1.0",
     "jsdom-global": "^3.0.2",
     "load-grunt-tasks": "^4.0.0",
     "mocha": "^6.0.0",