Microsoft.Automation/automationAccounts/variables@2022-08-08 - doesn't seem to be sending strings to ARM correctly

**Bicep version**
Bicep CLI version 0.12.40 (41892bd0fb)

**Describe the bug**
When trying to use the following resource (https://learn.microsoft.com/en-us/azure/templates/microsoft.automation/automationaccounts/variables?pivots=deployment-language-bicep) I attempt to define the value of the variable, and anytime I define a string I get the following error. **Invalid JSON - Kindly check the value of the variable.**

Below is the bicep example:

```bicep
resource aavar 'Microsoft.Automation/automationAccounts/variables@2022-08-08' = {
name: 'bicep'
parent: autoaccount
properties: {
description: 'test'
isEncrypted: false
value: 'totally a string'
}
}
```

**To Reproduce**
attempt to use Microsoft.Automation/automationAccounts/variables@2022-08-08 and define a variable with a string value.

**Additional context**
Just as an FYI, Integers and Booleans seem to work fine.

Start by reproducing the Microsoft.Automation/automationAccounts/variables@2022-08-08 resource from the Bicep example, comparing its string behavior with the working integer and Boolean values. Check how the Azure resource expects the variable value to be represented; done means a string value deploys successfully without the “Invalid JSON” error.

Written by the indexing model from the issue text.