chore(package): update mocha to version 7.1.2

Closes #22

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "eslint-config-imperative": "^3.0.0",
     "eslint-plugin-imperative": "^3.0.0",
     "husky": "^3.0.7",
-    "mocha": "^6.2.1",
+    "mocha": "^7.1.2",
     "nyc": "^15.0.0"
   },
   "directories": {