update change log PR

Author: seanrathier

packages/cloud_security_posture/changelog.yml

@@ -16,7 +16,7 @@
   changes:
     - description: Remove GCP project and organization id from required vars
       type: bugfix
-      link: https://github.com/elastic/integrations/pull/13714
+      link: https://github.com/elastic/integrations/pull/13806
 - version: "1.13.0"
   changes:
     - description: Promote integration