Update breaking-changes.md

Author: georgewallace

release-notes/elastic-cloud-serverless/breaking-changes.md

@@ -6,9 +6,14 @@ products:
 
 # {{serverless-full}} breaking changes [elastic-cloud-serverless-breaking-changes]
 
+## August 25, 2025 [elastic-cloud-serverless-08252025-breaking]
+
+* Allow partial results by default in ES|QL [#125060](https://github.com/elastic/elasticsearch/pull/125060)
+
 ## August 11, 2025 [elastic-cloud-serverless-08112025-breaking]
+
 * Improves advanced settings management APIs privilege checks [#230067]({{kib-pull}}230067)
 
 ## June 23, 2025 [serverless-changelog-06232025]
 
-* {{esql}}: Disallows mixed quoted/unquoted patterns in `FROM` commands [#127636]({{es-pull}}127636)
+* {{esql}}: Disallows mixed quoted/unquoted patterns in `FROM` commands [#127636]({{es-pull}}127636)