Deploying Infrastructure via Azure DevOps

### Describe the bug or the issue that you are facing

Error when following the deploy with terraform guide, outer loop step 8
https://github.com/Azure/mlops-v2/blob/main/documentation/deployguides/deployguide_ado.md

When running the pipeline to create the ML infra, I get the error:
`Repository mlops-templates references endpoint github-connection which does not exist or is not authorized for use`

I have seen a similar issue (now closed) which indicated to install the Terraform for ADO extension. I have this installed.


### Steps/Code to Reproduce

As described earlier

### Expected Output

Pipeline runs successfully, provisioning the required AML resources

### Versions

As described earlier

### Which platform are you using for deploying your infrastrucutre?

Azure DevOps (ADO)

### If you mentioned Others, please mention which platformm are you using?

_No response_

### What are you using for deploying your infrastrucutre?

Terraform

### Are you using Azure ML CLI v2 or Azure ML Python SDK v2

Azure ML Python SDK v2

### Describe the example that you are trying to run?

As described earlier