chore(deps): update dependency @types/mocha to v5.2.5 (#512)

Author: renovate[bot]

package-lock.json

@@ -71,7 +71,7 @@
     "@types/chai-as-promised": "7.1.0",
     "@types/glob": "5.0.35",
     "@types/lodash": "4.14.116",
-    "@types/mocha": "5.2.0",
+    "@types/mocha": "5.2.5",
     "@types/mz": "0.0.31",
     "@types/node": "7.0.63",
     "@types/object-hash": "1.2.0",