boundary

Has anyone succeeded using Bedrock with a custom endpoint URL? I get this error:

```
Failed to create clients from client_registry\n\nCaused by:\n    0: Failed to parse client: helicone-aws-bedrock-sonnet-4.6\n    1: Failed to parse client options for helicone-aws-bedrock-sonnet-4.6:\n       Unsupported property: endpoint_url"
```

though the `endpoint_url` is documented as supported: https://docs.boundaryml.com/ref/llm-client-providers/aws-bedrock#explicit-credentials

Hey <@150952216532877312>! As far as I understand this is because the `baml` submodule is 6 months old, and `enpoint_url` was not supported by then.

Any plans to get to latest baml version?

<@150952216532877312> Claude-ed the update, please check it out: https://github.com/emilsoman/baml_elixir/pull/14

The tests pass.

thanks for opening the PR, cloned your branch and the tests all pass! can you address a comment that i left?

Hi <@150952216532877312>, thanks for taking a look.

I addressed your comment and in addition added one more missing feature (cached tokens collecting).

Opened a new PR, closed the old one.