chore(deps): update dependency typescript to v3.9.3

Author: renovate-bot

package.json

@@ -24,6 +24,6 @@
   },
   "devDependencies": {
     "@types/node": "13.13.6",
-    "typescript": "3.9.2"
+    "typescript": "3.9.3"
   }
 }