Update CHANGELOG.md for #39256

CHANGELOG.md

@@ -6,10 +6,12 @@ BREAKING CHANGES:
 
 NOTES:
 
+* provider: Downgrades to Go `1.22.6`. A small number of users have reported failed or hanging network connections using the version of the Terraform AWS provider which was first built with Go `1.23.0` (`v5.65.0`). At this point, maintainers have been unable to reproduce failures, but enough distinct users have reported issues that we are going to attempt downgrading to Go `1.22.6` for the next provider release. We will continue to coordinate with users and AWS in an attempt to identify the root cause, using this upcoming release with a reverted Go build version as a data point. ([#39256](https://github.com/hashicorp/terraform-provider-aws/issues/39256))
 * resource/aws_lexv2models_slot_type: Within the `value_selection_setting.advanced_recognition_setting` block, the `audio_recognition_setting` argument has been renamed `audio_recognition_strategy`. See the [linked pull request](https://github.com/hashicorp/terraform-provider-aws/pull/39254) for additional justification on this change. The previous misnaming effectively made this argument unusable, therefore a breaking change in a minor version was deemed acceptable. ([#39254](https://github.com/hashicorp/terraform-provider-aws/issues/39254))
 
 FEATURES:
 
+* **New Resource:** `aws_cloudformation_stack_instances` ([#36794](https://github.com/hashicorp/terraform-provider-aws/issues/36794))
 * **New Resource:** `aws_computeoptimizer_enrollment_status` ([#35349](https://github.com/hashicorp/terraform-provider-aws/issues/35349))
 * **New Resource:** `aws_computeoptimizer_recommendation_preferences` ([#35349](https://github.com/hashicorp/terraform-provider-aws/issues/35349))
 * **New Resource:** `aws_datazone_environment_profile` ([#38581](https://github.com/hashicorp/terraform-provider-aws/issues/38581))
@@ -18,6 +20,8 @@ FEATURES:
 ENHANCEMENTS:
 
 * data-source/aws_acm_certificate: Mark `domain` and `tags` as Optional. This enables certificates to be matched based on tags ([#31453](https://github.com/hashicorp/terraform-provider-aws/issues/31453))
+* resource/aws_cloudhsm_v2_cluster: Add `mode` argument ([#39206](https://github.com/hashicorp/terraform-provider-aws/issues/39206))
+* resource/aws_cloudhsm_v2_cluster: Support `hsm2m.medium` as a valid value for `hsm_type` ([#39206](https://github.com/hashicorp/terraform-provider-aws/issues/39206))
 * resource/aws_quicksight_user: Add `READER_PRO`, `AUTHOR_PRO`, and `ADMIN_PRO` as valid values for the `user_role` argument ([#39220](https://github.com/hashicorp/terraform-provider-aws/issues/39220))
 * resource/aws_sagemaker_domain: Add `default_user_settings.studio_web_portal_settings`, `default_space_settings.jupyter_lab_app_settings`, `default_space_settings.space_storage_settings`, `default_space_settings.custom_posix_user_config`, and `default_space_settings.custom_file_system_config` configuration blocks ([#38457](https://github.com/hashicorp/terraform-provider-aws/issues/38457))
 * resource/aws_sagemaker_endpoint_configuration: Add `production_variants.managed_instance_scaling` and `shadow_production_variants.managed_instance_scaling` configuration blocks ([#35479](https://github.com/hashicorp/terraform-provider-aws/issues/35479))
@@ -29,6 +33,7 @@ BUG FIXES:
 * resource/aws_batch_job_queue: Fixes error in schema migration function. ([#39257](https://github.com/hashicorp/terraform-provider-aws/issues/39257))
 * resource/aws_ecr_repository_policy: Fix retry logic handling eventual consistency of newly created IAM roles ([#39190](https://github.com/hashicorp/terraform-provider-aws/issues/39190))
 * resource/aws_eks_cluster: Return `created_at` as an [RFC3339](https://www.rfc-editor.org/rfc/rfc3339) formatted timestamp ([#24183](https://github.com/hashicorp/terraform-provider-aws/issues/24183))
+* resource/aws_iam_role: Fix to reduce Terraform reporting differences when a role's ARN temporarily appears as the role's unique ID ([#36794](https://github.com/hashicorp/terraform-provider-aws/issues/36794))
 * resource/aws_quicksight_data_set: Change `permissions.actions` `MaxItems` from `16` to `20`. This fixes a regression introduced in [v5.66.0](https://github.com/hashicorp/terraform-provider-aws/blob/main/CHANGELOG.md#5660-september--5-2024) ([#39226](https://github.com/hashicorp/terraform-provider-aws/issues/39226))
 * resource/aws_quicksight_vpc_connection: Remove `vpc_connection_id` regular expression validator. This fixes a regression introduced in [v5.66.0](https://github.com/hashicorp/terraform-provider-aws/blob/main/CHANGELOG.md#5660-september--5-2024) ([#39231](https://github.com/hashicorp/terraform-provider-aws/issues/39231))
 * resource/aws_verifiedaccess_endpoint: fix crash when updating `load_balancer_options.subnet_ids` ([#39196](https://github.com/hashicorp/terraform-provider-aws/issues/39196))