Introducing Change Graphs: Compare metrics over time

Datadog's Terraform provider v4.0.0 introduces significant improvements including enhanced resource import capabilities and support for new Datadog products like Vulnerability Management and Cloud Workload Security. This release focuses on streamlining infrastructure-as-code workflows with more reliable state management and expanded coverage of Datadog's monitoring and security features. Users are encouraged to review the migration guide before upgrading to ensure a smooth transition.