chore: adhere to ruff's UP

basically use `list` and `type` instead of `List` and `Type`

this is save to use for python3.9 and has been deprecated. also has some
performance drawbacks.
read more here: https://docs.astral.sh/ruff/rules/non-pep585-annotation/

lnbits/middleware.py

@@ -29,7 +29,7 @@ class InstalledExtensionMiddleware:
             await self.app(scope, receive, send)
             return
 
-        top_path, *rest = [p for p in full_path.split("/") if p]
+        top_path, *rest = (p for p in full_path.split("/") if p)
         headers = scope.get("headers", [])
 
         # block path for all users if the extension is disabled