Ensure cross account access is disabled for Azure Synapse Firewall Rule

Start and End IPs are too open, they may lead to cross account access for Azure Synapse Firewall Rule.

In Azure Console -

1. Open the Azure Portal and go to Synapse Analytics.
2. Select the Synapse workspace that you wish to edit.
3. Under Security, select Managed Private Endpoints.
4. Set private endpoint access accordingly.

In Terraform -

1. For each azurerm_synapse_workspace resource, create an azurerm_synapse_firewall_rule resource.
2. Set the start_ip_address field to something other than 0.0.0.0.

References:
https://learn.microsoft.com/en-us/azure/synapse-analytics/security/how-to-create-managed-private-endpoints
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/synapse_workspace
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/synapse_firewall_rule