refactor(middleware_factory): add from __future__ import annotations

and update code according to ruff rules TCH, UP006, UP007, UP037 and
FA100.

aws_lambda_powertools/middleware_factory/factory.py

@@ -1,8 +1,10 @@
+from __future__ import annotations
+
 import functools
 import inspect
 import logging
 import os
-from typing import Any, Callable, Optional
+from typing import Any, Callable
 
 from ..shared import constants
 from ..shared.functions import resolve_truthy_env_var_choice
@@ -13,7 +15,7 @@
 
 
 # Maintenance: we can't yet provide an accurate return type without ParamSpec etc. see #1066
-def lambda_handler_decorator(decorator: Optional[Callable] = None, trace_execution: Optional[bool] = None) -> Callable:
+def lambda_handler_decorator(decorator: Callable | None = None, trace_execution: bool | None = None) -> Callable:
     """Decorator factory for decorating Lambda handlers.
 
     You can use lambda_handler_decorator to create your own middlewares,
@@ -112,7 +114,7 @@ def lambda_handler(event, context):
     )
 
     @functools.wraps(decorator)
-    def final_decorator(func: Optional[Callable] = None, **kwargs: Any):
+    def final_decorator(func: Callable | None = None, **kwargs: Any):
         # If called with kwargs return new func with kwargs
         if func is None:
             return functools.partial(final_decorator, **kwargs)