Ensure that the latest version of NSG flow log is being used via Azure Network Watcher Flow Log

Latest version of NSG flow log is not enabled via Azure Network Watcher Flow Log, lack of logs may hamper incident response activities.

In Azure Console -

1. Open the Azure Portal and go to Network Watcher.
2. Under Logs, select NSG flow logs.
3. Choose the NSG flow log entry you wish to edit.
4. Under Flow Logs Version, select Version 2.
5. Select Save.

In Terraform -

1. In the azurerm_network_watcher_flow_log resource, set the version field to 2.

References:
https://learn.microsoft.com/en-us/azure/network-watcher/network-watcher-nsg-flow-logging-overview#log-format
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_watcher_flow_log