Handle Error from Get-AzOpsCurrentPrincipal

[Jefajers]

Overview/Summary

This PR bumps dependencies and adds logic to handle errors from Get-AzOpsCurrentPrincipal when performing Invoke-AzRestMethod or Get-AzADServicePrincipal.

This is to better align with previous Az.Resources default behavior and avoid unintentional errors thrown when principal id cannot be resolved.

Bumping dependencies.

• Az.Accounts 2.15.1
• Az.Resources 6.15.0

This PR fixes/adds/changes/removes

1. Changes Initialize-AzOpsEnvironment.ps1
2. Changes Get-AzOpsCurrentPrincipal.ps1

Breaking Changes

N/A

Testing Evidence

Manual tests for user, managed identity and default logic like with tokens have been performed.

As part of this Pull Request I have

• [x] Checked for duplicate Pull Requests
• [x] Associated it with relevant issues, for tracking and closure.
• [x] Ensured my code/branch is up-to-date with the latest changes in the main branch
• [x] Performed testing and provided evidence.
• [x] Updated relevant and associated documentation.