Update CHANGELOG.md for 11.3.5

[ci skip]

CHANGELOG.md

@@ -2,6 +2,14 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
+## 11.3.5 (2018-10-15)
+
+### Fixed (2 changes)
+
+- Fix loading issue on some merge request discussion. !21982
+- Fix project deletion when there is a export available. !22276
+
+
 ## 11.3.4 (2018-10-05)
 ### Security (3 changes)

changelogs/unreleased/51958-fix-mr-discussion-loading.yml

----
-title: Fix loading issue on some merge request discussion
-merge_request: 21982
-author:
-type: fixed

changelogs/unreleased/sh-fix-project-deletion-with-export.yml

----
-title: Fix project deletion when there is a export available
-merge_request: 22276
-author:
-type: fixed