Perform password validation in UpdateUser

Closes #1768 (closed)

arkindex/users/serializers.py

@@ -54,6 +54,10 @@ class UserSerializer(SimpleUserSerializer):
             "auth_token": {"read_only": True},
         }
 
+    def validate(self, data):
+        data = super().validate(data)
+        return validate_user_password(self.context["request"].user, data)
+
     @extend_schema_field(inline_serializer(
         name="Features",
         fields={