ultralytics 8.3.61 Restore Python 3.8 compatibility (#18666)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

ultralytics/utils/__init__.py

@@ -1243,7 +1243,7 @@ class SettingsManager(JSONDict):
         """Updates settings, validating keys and types."""
         for arg in args:
             if isinstance(arg, dict):
-                kwargs |= arg
+                kwargs.update(arg)
         for k, v in kwargs.items():
             if k not in self.defaults:
                 raise KeyError(f"No Ultralytics setting '{k}'. {self.help_msg}")