[Feature Request]: Enable utility version control in CI

### Description

The CARML CI currently does not provide out-of-the-gate capabilities to control which version of the uses tools (for example) are installed on the agents. As this can lead to issues (ref: #2641 #2659), we should implement a logic that optionally allows just that.

The idea could be 3 settings in the `settings.yml`:
- AzCLI version
- PowerShell version
- Bicep version

- and if they're set to '*' or 'latest' we could install latest.

The `Set-EnvironmentOnAgent` script already surfaces the used versions and in parts the code to install specific versions of e.g. Bicep.

In a first step we could concentrate on installing/updating - and in a second step on downgrading (if required)