Improve many __(a)exit__ annotations (#9696)

stubs/invoke/invoke/runners.pyi

@@ -1,4 +1,5 @@
 from collections.abc import Iterable, Mapping
+from types import TracebackType
 from typing import Any, TextIO, overload
 from typing_extensions import Literal, TypeAlias
 
@@ -194,7 +195,9 @@ class Promise(Result):
     def __init__(self, runner) -> None: ...
     def join(self): ...
     def __enter__(self): ...
-    def __exit__(self, exc_type, exc_value, traceback) -> None: ...
+    def __exit__(
+        self, exc_type: type[BaseException] | None, exc_value: BaseException | None, traceback: TracebackType | None
+    ) -> None: ...
 
 def normalize_hide(val, out_stream=..., err_stream=...): ...
 def default_encoding() -> str: ...