added security message for the patch release

Author: harshitchaudhary94

content/terraform-enterprise/1.0.x/docs/enterprise/releases/1.0.x/index.mdx

@@ -71,6 +71,8 @@ Flexible Deployment Options `terraform-enterprise` container digest: amd64/linux
 ## Bug Fixes
 1. The Terraform Enterprise API now returns the value of the x-tfe-version header in its response. This header indicates the current version of Terraform Enterprise.
 
+## Security
+1. Security vulnerabilities have been addressed and resolved in this update to enhance overall system protection.
 
 ## 1.0.1
 <span class="h4-size">2025-09-15</span>