Bump mypy to 1.11.1 (#12463)

stubs/html5lib/html5lib/_utils.pyi

@@ -15,7 +15,7 @@ class BoundMethodDispatcher(Mapping[Any, Any]):
     dispatcher: Any
     def __init__(self, instance, dispatcher) -> None: ...
     def __getitem__(self, key): ...
-    def get(self, key, default): ...
+    def get(self, key, default): ...  # type: ignore[override]
     def __iter__(self): ...
     def __len__(self) -> int: ...
     def __contains__(self, key): ...