upgrade typescript

Author: ianhi

{{cookiecutter.github_project_name}}/package.json

@@ -87,7 +87,7 @@
     "source-map-loader": "^0.2.4",
     "style-loader": "^1.0.0",
     "ts-loader": "^5.2.1",
-    "typescript": "~3.8",
+    "typescript": "~4.1.3",
     "webpack": "^5",
     "webpack-cli": "^4"
   },