chore(package): update mocha to version 7.1.1

Closes #52

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "hoek": "^6.0.0",
     "jsdom": "^14.0.0",
     "jsdom-global": "^3.0.2",
-    "mocha": "^6.0.0",
+    "mocha": "^7.1.1",
     "mochawesome": "^3.0.2",
 
     "nyc": "^13.2.0",