Cognitive Services: allow to set the DisableLocalAuth property

**Related command**

```az cognitiveservices account update -n -g ```

**Is your feature request related to a problem? Please describe.**
You can set it with the Azure Powershell commands, but not with the az cli:

```Set-AzCognitiveServicesAccount -ResourceGroupName -Name -DisableLocalAuth $True```

**Describe the solution you'd like**
Add this as a parameter in the command

```az cognitiveservices account update -n -g --disableLocalAuth true```

**Describe alternatives you've considered**
By now the only workaround is to use the ps command.

**Additional context**

This [page](https://learn.microsoft.com/en-us/azure/ai-services/disable-local-auth) says that you can use a policy to disable it, but it is not true, the policy just audits the state and marks the resources as not compliant, but does not modify the value.