New feature roundup: Alerting

Datadog's Terraform provider v4.0.0 introduces significant improvements, including support for managing Datadog Synthetics tests and enhanced resource import capabilities. This release focuses on streamlining infrastructure-as-code workflows for Datadog monitoring and security, offering more comprehensive control and automation. Users are encouraged to review the migration guide due to breaking changes, but the upgrade unlocks powerful new features for managing Datadog resources with Terraform.