Update mocha

Author: inukshuk

package-lock.json

@@ -43,7 +43,7 @@
     "electron-window": "^0.8.0",
     "fs-extra": "^7.0.1",
     "log-symbols": "^2.2.0",
-    "mocha": "^6.1.1",
+    "mocha": "^6.1.2",
     "which": "^1.3.1",
     "yargs": "^13.2.2"
   },