Update CHANGELOG.md

Author: radeksimko

CHANGELOG.md

@@ -12,6 +12,7 @@ IMPROVEMENTS:
  * provider/aws: Allow `aws_alb` to have the name auto-generated [GH-8673]
  * provider/aws: Expose `arn_suffix` on `aws_alb` [GH-8833]
  * provider/aws: Add JSON validation to the `aws_cloudformation_stack` resource [GH-8896]
+ * provider/aws: Add JSON validation to the `aws_glacier_vault` resource [GH-8899]
  * provider/azurerm: support Diagnostics Profile [GH-8277]
  * provider/google: Resources depending on the `network` attribute can now reference the network by `self_link` or `name` [GH-8639]
  * provider/postgresql: The standard environment variables PGHOST, PGUSER, PGPASSWORD and PGSSLMODE are now supported for provider configuration [GH-8666]