Fix settings access for Python 3.12

Author: whalesalad

src/zeep/settings.py

@@ -76,6 +76,7 @@ def __call__(self, **options):
                     setattr(self._tls, key, value)
 
     def __getattribute__(self, key):
-        if key != "_tls" and hasattr(self._tls, key):
-            return getattr(self._tls, key)
-        return super().__getattribute__(key)
+        _tls = object.__getattribute__(self, "_tls")
+        if key != "_tls" and hasattr(_tls, key):
+            return getattr(_tls, key)
+        return object.__getattribute__(self, key)