Release 1.21.421.1

[NikCharlebois]

Pull Request (PR) description

1.21.421.1

• AADConditionalAccessPolicy
  • Fix to allow 'undefined' as a value for multiple parameters;
• EXOTransportRule
  • Fixed schema to support Service Principal Auth;
• TeamsChannelTab
  • Fixed typo in parameter 'TeamId';
• MISC
  • Refactor of all EXO resources to fixes for Set-TargetResource
    functions where Service Principal was used to authenticate;
  • Refactored connections across all resources to help with
    Telemetry regarding what auth method users are leveraging.

This Pull Request (PR) fixes the following issues

N/A

---

This change is