chore: update demo to the latest cookiecutter-robust-python

Author: 56kyle

.cookiecutter.json

@@ -1,5 +1,5 @@
 {
-  "_commit": "9490ead9e72f2e78d421b5d791e64e312af7905d",
+  "_commit": "28cf872a70bdeafd3f65c7b78935e85518df5f0a",
   "_template": "C:\\Users\\56kyl\\source\\repos\\cookiecutter-robust-python",
   "add_rust_extension": false,
   "author": "Kyle Oliver",

.cruft.json

@@ -1,6 +1,6 @@
 {
   "template": "C:\\Users\\56kyl\\source\\repos\\cookiecutter-robust-python",
-  "commit": "9490ead9e72f2e78d421b5d791e64e312af7905d",
+  "commit": "28cf872a70bdeafd3f65c7b78935e85518df5f0a",
   "checkout": null,
   "context": {
     "cookiecutter": {
@@ -18,7 +18,7 @@
       "license": "MIT",
       "development_status": "Development Status :: 1 - Planning",
       "_template": "C:\\Users\\56kyl\\source\\repos\\cookiecutter-robust-python",
-      "_commit": "9490ead9e72f2e78d421b5d791e64e312af7905d"
+      "_commit": "28cf872a70bdeafd3f65c7b78935e85518df5f0a"
     }
   },
   "directory": null

scripts/util.py

@@ -8,7 +8,7 @@
 from typing import Callable
 from typing import Literal
 from typing import Optional
-from typing import TypeAlias
+from typing_extensions import TypeAlias
 
 
 REPO_FOLDER: Path = Path(__file__).resolve().parent.parent