chore: update typescript dep to 3.6.x

Author: simllll

package-lock.json

@@ -40,7 +40,7 @@
     "progress": "^2.0.3",
     "shelljs": "^0.8.3",
     "typedoc-default-themes": "^0.6.0",
-    "typescript": "3.5.x"
+    "typescript": "3.6.x"
   },
   "devDependencies": {
     "@types/fs-extra": "^8.0.0",
@@ -49,6 +49,7 @@
     "@types/mocha": "^5.2.7",
     "@types/mockery": "^1.4.29",
     "@types/shelljs": "^0.8.5",
+    "@types/node": "^12.7.5",
     "mocha": "^6.2.0",
     "mockery": "^2.1.0",
     "nyc": "^14.1.1",