Add support for model version in Vertex AI (#1496)
* Add support for model version in Vertex AI
* Update src/lib/server/endpoints/google/endpointVertex.ts
Co-authored-by: goupilew <arthurgoupil@gmail.com>
* fix: optional chaining on extraBody
---------
Co-authored-by: goupilew <arthurgoupil@gmail.com>
Co-authored-by: Nathan Sarrazin <sarrazin.nathan@gmail.com>