Errors with new GPT-4 and GPT-3.5 versions

[atzitzeras]

When attempting to use GPT4 0613 or GPT3.5

The following error comes up:
The completion operation does not work with the specified model, gpt-4. Please choose different model and try again. You can learn more about which models can be used with each operation here: https://go.microsoft.com/fwlink/?linkid=2197993.

This looks like a code base error as the Completion operation is not supported by gpt-35-turbo(0613) and gpt-35-turbo-16k(0613) models. These models only support Chat Completions API. Only older turn model - GPT-3.5 Turbo (0301) supports both Chat and completions API. Please refer to the GPT-3.5 models for details.

On top of that, the accelerator is also using the old version of even GPT3.5, 0301. we need to switch to the new version, 0613, which yields better results. This will require the step above as well.

This should be configurable and not hard coded on the bicep.

Reference to the Bicep code https://github.com/microsoft/PubSec-Info-Assistant/blob/deb64086a5b1c5b720fdd6e7dbded05db7f8d2cc/infra/main.bicep#L180C9-L187C46

model: {
format: 'OpenAI'
name: chatGptModelName
version: '0301'
}
sku: {
name: 'Standard'
capacity: chatGptDeploymentCapacity

[dayland]

A temp HF was put in to move to the recommended model and version in #226 .

An additional fix is coming to honor the user configured values even in the default BICEP deployment.