Is your feature request related to a problem?
We currently have a project using AWS OpenSearch in our work.
And the project has a lot of data stored in it, to our delight.
However, we are getting 429/TooManyRequest errors returned when creating, updating, or deleting documents using the bulk API.
To prevent this as much as possible, we would like to use the bulk methods of the helpers, but since script update is not supported by the helpers, we are unable to do so.

What solution would you like?

I want to be able to use script update in helper bulk methods.

What alternatives have you considered?
Currently, we are implementing our own process that uses the bulk API and updates in parallel.
If we can use bulk methods of helpers, it will be safer and easier to implement.