Update CHANGELOG.md for #41388

Author: changelogbot

CHANGELOG.md

@@ -16,6 +16,7 @@ ENHANCEMENTS:
 BUG FIXES:
 
 * data-source/aws_dynamodb_table: Add missing `on_demand_throughput` and `global_secondary_index.*.on_demand_throughput` attributes to resolve read error ([#41350](https://github.com/hashicorp/terraform-provider-aws/issues/41350))
+* resource/aws_cloudformation_stack_set_instance: Prevents overly-long creation times and possible `OperationInProgress` errors ([#41388](https://github.com/hashicorp/terraform-provider-aws/issues/41388))
 * resource/aws_detective_member: No longer fails with unexpected status when adding Organization member accounts. ([#41344](https://github.com/hashicorp/terraform-provider-aws/issues/41344))
 * resource/aws_ec2_transit_gateway_route_table_association: Fix deleting and recreating resource when dependencies changes don't require the resource be recreated. ([#41292](https://github.com/hashicorp/terraform-provider-aws/issues/41292))
 * resource/aws_internet_gateway: Fix to continue deletion when attachment is not found ([#41346](https://github.com/hashicorp/terraform-provider-aws/issues/41346))