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

Closes #27

Author: greenkeeper[bot]

package.json

@@ -8,7 +8,7 @@
   "devDependencies": {
     "@types/amqplib": "^0.5.4",
     "@types/chai": "^4.0.4",
-    "@types/mocha": "^5.0.0",
+    "@types/mocha": "^7.0.2",
     "@types/node": "^11.9.0",
     "@types/shelljs": "^0.8.0",
     "chai": "^4.1.2",