Update CHANGELOG.md for #26697

Author: changelogbot

CHANGELOG.md

@@ -22,6 +22,7 @@ BUG FIXES:
 * data-source/aws_iam_policy_document: Correctly handle unquoted Boolean values in `Condition` ([#26657](https://github.com/hashicorp/terraform-provider-aws/issues/26657))
 * data-source/aws_iam_policy_document: Prevent crash when `source_policy_documents` contains empty or invalid JSON documents ([#26640](https://github.com/hashicorp/terraform-provider-aws/issues/26640))
 * resource/aws_instance: No longer fails when setting `metadata_options.instance_metadata_tags` ([#26631](https://github.com/hashicorp/terraform-provider-aws/issues/26631))
+* resource/aws_security_group: Defaults to default VPC when not supplied ([#26697](https://github.com/hashicorp/terraform-provider-aws/issues/26697))
 
 ## 4.29.0 (September  1, 2022)