fix setattr call

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

authentik/outposts/models.py

@@ -354,7 +354,7 @@ def user(self) -> User:
         for key, value in attrs.items():
             if getattr(user, key) != value:
                 dirty = True
-                setattr(user, value)
+                setattr(user, key, value)
         if user.has_usable_password():
             user.set_unusable_password()
             dirty = True