```release-note:bug
resource/aws_rds_cluster_instance: Remove force new resource on the `engine_version` parameter to allow upgrade without remove instances
```

```release-note:enhancement
resource/aws_rds_cluster: Add `db_instance_parameter_group_name` attribute to allow major version upgrade using custom parameter groups
```

```release-note:enhancement
resource/rds_cluster_instance: Add `performance_insights_retention_period` attribute
```

```release-note:bug
resource/aws_rds_cluster: Add possible pending states for cluster update
```

```release-note:enhancement
resource/aws_rds_cluster: Add `enable_global_write_forwarding` attribute
```
