Update CHANGELOG-EE.md for 13.5.2-ee

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CHANGELOG-EE.md

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+## 13.5.2 (2020-11-02)
+
+### Security (4 changes)
+
+- Sync code owners rules on MR update. !1003
+- Fix potential regex backtracking attack in path parsing in search result. !1027
+- Transfer missing epics when a project is transferred.
+- Tighten the RBAC for GraphQL in SAST CiConfiguration.
+
+
 ## 13.5.1 (2020-10-22)
 - No changes.

ee/changelogs/unreleased/security-fix-blob-path-parsing.yml

----
-title: Fix potential regex backtracking attack in path parsing in search result
-merge_request: 1022
-author:
-type: security

ee/changelogs/unreleased/security-id-fix-bypass-code-owners.yml

----
-title: Sync code owners rules on MR update
-merge_request: 1003
-author:
-type: security

ee/changelogs/unreleased/security-remove-epic-issue-links-when-tranferring-a-project.yml

----
-title: Transfer missing epics when a project is transferred
-merge_request:
-author:
-type: security

ee/changelogs/unreleased/security-sast-ci-conf.yml

----
-title: Tighten the RBAC for GraphQL in SAST CiConfiguration
-merge_request:
-author:
-type: security