Fixes: 1) Correct improper function scope for user.save in UpdateUser mutation;

Extra: 1) Minor code readability adjustment.

engine/vibes_auth/graphene/mutations.py

@@ -173,7 +173,7 @@ class UpdateUser(Mutation):
                 ):
                     setattr(user, attr, value)
 
-                user.save()
+            user.save()
 
             return UpdateUser(user=user)  # ty: ignore[unknown-argument]