chore(deps): update dependency typescript to v3.9.10

Author: renovate-bot

package-lock.json

@@ -80,7 +80,7 @@
     "ts-node-dev": "1.0.0-pre.44",
     "tslint": "5.20.1",
     "tslint-config-prettier": "1.18.0",
-    "typescript": "3.4.5"
+    "typescript": "3.9.10"
   },
   "scripts": {
     "build": "rimraf dist && tsc",