[sc-12774] remove ledger_id from types based on conserv changes

[dwdozier]

DRAFT: still having trouble with:
service_account_null_last_used_by test in user_details
every attempt at getting the correct type in the mock data for
chatgpt_threads results in an error (incorrect type or key must be a string)

Pulling in the new openapi spec from conserv caused a ton of changes :(

[dwdozier]

The error as it currently sits:

Err(Error("key must be a string", line: 1, column: 616))

This seems to be due to the chatgpt_threads being a HashMap and the deserializer (serde) may not handle it? I am definitely at my limits with this one.

[matthewcummings]

@dwdozier does your manual override to the generated client code fix this issue?

[matthewcummings]

Also, can you point me to where you're seeing this error? I don't see it in CI.