chore(package): update @types/mocha to version 7.0.2

Closes #93

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
   "devDependencies": {
     "@types/chai": "^4.1.7",
     "@types/express": "^4.17.0",
-    "@types/mocha": "5.2.7",
+    "@types/mocha": "7.0.2",
     "@types/node": "^12.6.8",
     "@types/supertest": "2.0.8",
     "chai": "4.2.0",