change Generator to Iterator

Co-authored-by: Bruno Oliveira <[email protected]>

Author: herobank110

src/pytestqt/qtbot.py

@@ -644,7 +644,7 @@ def waitCallback(
         return blocker
 
     @contextlib.contextmanager
-    def captureExceptions(self) -> Generator["CapturedExceptions", None, None]:
+    def captureExceptions(self) -> Iterator["CapturedExceptions"]:
         """
         .. versionadded:: 2.1