Update CHANGELOG.md for #17982

CHANGELOG.md

@@ -4,10 +4,16 @@ ENHANCEMENTS:
 
 * resource/aws_appautoscaling_scheduled_action: Adds `timezone` support ([#17689](https://github.com/hashicorp/terraform-provider-aws/issues/17689))
 * resource/aws_appautoscaling_scheduled_action: Allows any timezone to be specified for `start_time` and `end_time` ([#17689](https://github.com/hashicorp/terraform-provider-aws/issues/17689))
+* resource/aws_appautoscaling_scheduled_action: Allows setting leaving `min_capacity` or `max_capacity` unset. ([#8777](https://github.com/hashicorp/terraform-provider-aws/issues/8777))
+* resource/aws_appautoscaling_scheduled_action: No longer re-creates when changes can be updated in-place. ([#8777](https://github.com/hashicorp/terraform-provider-aws/issues/8777))
+* resource/aws_cognito_user_pool: Add support for `configuration_set` in `email_configuration` ([#14935](https://github.com/hashicorp/terraform-provider-aws/issues/14935))
+* resource/aws_cognito_user_pool_client: Add plan time validation for `name`, `default_redirect_uri`, `supported_identity_providers` ([#14935](https://github.com/hashicorp/terraform-provider-aws/issues/14935))
+* resource/aws_cognito_user_pool_client: Add support for `access_token_validity` and `id_token_validity`, `token_validity_units` ([#14935](https://github.com/hashicorp/terraform-provider-aws/issues/14935))
 * resource/aws_mq_broker: Add RabbitMQ as option for `engine_type`, and new arguments `authentication_strategy`, `ldap_server_metadata`, and `storage_type`. Improve handling of eventual consistency. ([#16108](https://github.com/hashicorp/terraform-provider-aws/issues/16108))
 
 BUG FIXES:
 
+* resource/aws_rds_cluster_instance: Add `configuring-iam-database-auth` pending state ([#17982](https://github.com/hashicorp/terraform-provider-aws/issues/17982))
 * resource/aws_storagegateway_upload_buffer: Replace `Provider produced inconsistent result after apply` with actual error message ([#17880](https://github.com/hashicorp/terraform-provider-aws/issues/17880))
 
 ## 3.31.0 (March 04, 2021)