Why can’t I scale my Aurora Postgres Serverless V2 down to zero?

I'm working with an RDS Aurora Postgres Serverless V2 instance, and I thought I could set the minimum capacity to zero to save on costs when it's not in use. However, I keep running into an issue. My resource configuration looks like this:

```hcl
resource "aws_rds_cluster" "operational-postgresql-cluster-dev" {
cluster_identifier = "operational-postgresql-cluster-dev"
engine = "aurora-postgresql"
engine_version = "16.6"
engine_mode = "provisioned"
availability_zones = ["eu-central-1a", "eu-central-1b", "eu-central-1c"]
vpc_security_group_ids = [aws_security_group.dev_v1_security_group_rds.id]
db_subnet_group_name = aws_db_subnet_group.operational_db_dev_subnet_group.name
database_name = "operational_db_dev_v1"
master_username = "db_admin"
master_password = aws_secretsmanager_secret_version.operational_dev_db_password_v1.secret_string
skip_final_snapshot = false
final_snapshot_identifier = "aurora-postgres-dev-cluster-backup-v1"
backup_retention_period = 14
enable_http_endpoint = true
serverlessv2_scaling_configuration {
max_capacity = 1.0
min_capacity = 0.5
}
}
```

The article I read from AWS suggests that scaling down to zero is possible, but when I try to set `min_capacity` to 0.0, I get the following error:

*Error: expected serverlessv2_scaling_configuration.0.min_capacity to be in the range (0.500000 - 128.000000), got 0.000000*

Is this a bug, or do I need to use AWS CLI commands to enable this feature? Any help would be appreciated!