Azure Containee groups: MemoryInGb should support decimal values

### Resource Type

Microsoft.ContainerInstance/containerGroups

### Api Version

2022-09-01

### Issue Type

Inaccurate property type(s)

### Other Notes

`properties.containers. properties.resources.requests.memoryInGB` schema should - I believe - support `string` type as requested memory can also be a decimal. i.e. `1.5Gb`

### Bicep Repro

```
resource apiContainerGroup 'Microsoft.ContainerInstance/containerGroups@2022-09-01' = {
...
properties: {
containers: [
{
...
properties: {
...
resources: {
requests: {
memoryInGB: '1.5'
}
}
}
}
]
...
}
}
```

### Confirm

- [X] I have searched this repository and have not found similar issue reports.

Locate the definition for Microsoft.ContainerInstance/containerGroups@2022-09-01 and inspect the type of properties.containers.properties.resources.requests.memoryInGB. Confirm how the schema represents values such as '1.5', then verify that decimal memory requests are accepted without invalidating existing integer values.

Written by the indexing model from the issue text.