Update CHANGELOG-EE.md for 13.3.8-ee

[ci skip]

CHANGELOG-EE.md

@@ -489,6 +489,16 @@ Please view this file on the master branch, on stable branches it's out of date.
 - Elasticsearch reindexing: add confirmation popup and change color scheme. !42209
+## 13.3.8 (2020-10-21)
+
+### Fixed (4 changes)
+
+- Geo: Permanently enable package_file_registries field. !43436
+- Geo - Fix wikis with no repository on the primary trying to sync over and over. !43765
+- Handle 500 error for GraphQL configureSast mutation. !43936
+- Geo: Fix "Project repo not able to resync after storage move". !44172
+
+
 ## 13.3.4 (2020-09-02)
 - No changes.