Update CHANGELOG for #15348

Author: gdavison

CHANGELOG.md

@@ -15,11 +15,13 @@ ENHANCEMENTS
 
 * data-source/aws_ami: Add `throughput` attribute to `block_device_mappings` `ebs` attribute [GH-16631]
 * data-source/aws_ebs_volume: Add `throughput` attribute [GH-16517]
+* data-source/aws_elasticache_replication_group: Adds `arn` attribute [GH-15348]
 * data-source/aws_iam_user: Add `tags` attribute [GH-13287]
 * resource/aws_ami: Support `volume_type` value of `gp3` and add `throughput` argument to `ebs_block_device` configuration block [GH-16631]
 * resource/aws_ami_copy: Add `throughput` argument to `ebs_block_device` configuration block [GH-16631]
 * resource/aws_ami_from_instance: Add `throughput` argument to `ebs_block_device` configuration block [GH-16631]
 * resource/aws_ebs_volume: Add `throughput` argument [GH-16517]
+* resource/aws_elasticache_replication_group: Adds `arn` attribute [GH-15348]
 * resource/aws_lightsail_instance: Add `ipv6_addresses` attribute [GH-17155]
 * resource/aws_sagemaker_domain: Delete implicit EFS file system [GH-17123]