chore(package): update dependencies

Author: greenkeeper[bot]

package.json

@@ -13,18 +13,18 @@
     "@oclif/plugin-help": "^2.2.1",
     "jshashes": "^1.0.7",
     "tslib": "^1.10.0",
-    "nyc": "^13.3.0"
+    "nyc": "^14.1.1"
   },
   "devDependencies": {
     "@oclif/dev-cli": "^1.22.2",
     "@oclif/test": "^1.2.5",
     "@oclif/tslint": "^3.1.1",
     "@types/chai": "^4.2.3",
     "@types/mocha": "^5.2.7",
-    "@types/node": "^10.14.22",
+    "@types/node": "^12.11.2",
     "chai": "^4.2.0",
     "globby": "^10.0.1",
-    "mocha": "^5.2.0",
+    "mocha": "^6.2.2",
     "ts-node": "^8.4.1",
     "tslint": "^5.20.0",
     "typescript": "^3.6.4"