chore(package): update @types/mocha to version 7.0.1

Closes #52

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
     "@oclif/test": "^1.2.5",
     "@oclif/tslint": "^3.1.1",
     "@types/chai": "^4.2.3",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^7.0.1",
     "@types/moment-timezone": "^0.5.12",
     "@types/node": "^13.1.0",
     "@types/crypto-js": "^3.1.43",