Update CHANGELOG

changelogs/unreleased/validate-foreign-keys-being-indexed.yml

 ---
-title: Validate foreign keys being indexed
-merge_request:
+title: Validate foreign keys being created and indexed for column with _id 
+merge_request: 22808
 author:
 type: performance

changelogs/unreleased/validate-that-foreign-keys-are-created.yml

----
-title: Validate that FK is created for column with _id
-merge_request:
-author:
-type: performance