Ensure failing azure functions have email alerts configured for Azure Monitor Action Group

Azure Monitor Action Group does not have email alerts configured, this may make infrastructure non-compliant.

In Azure Console -

1. Open the Azure Portal and go to Monitor.
2. Under Alerts, create Action group.
3. Configure Basics, Notifications, Actions, Tags and select create.

In Terraform -

1. In the azurerm_monitor_action_group resource, set email_receiver block.

References:
https://learn.microsoft.com/en-us/azure/azure-monitor/alerts/action-groups
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/monitor_action_group