Using rest API, how to add new value to picklist for standard field without changing existing values.
How do I use the rest API to add a new picklist value to a standard field that already has many custom values. Specifically, I do not want to overwrite the picklist because that would delete the custom values. I just want to add a single new value to the list.

I investigated and found a way with the tools api {{_endpoint}}/services/data/v{{version}}/tooling/sobjects/CustomField/00N7R00000C83Hu but it only works for non-standard created fields.