Update CHANGELOG.md for 11.9.5

[ci skip]

CHANGELOG.md

@@ -2,6 +2,19 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
+## 11.9.5 (2019-04-03)
+
+### Fixed (3 changes)
+
+- Force to recreate all MR diffs on import. !26480
+- Fix API /project/:id/branches not returning correct merge status. !26785
+- Avoid excessive recursive calls with Rugged TreeEntries. !26813
+
+### Performance (1 change)
+
+- Force a full GC after importing a project. !26803
+
+
 ## 11.9.4 (2019-03-28)
 ### Security (8 changes)

changelogs/unreleased/recreate-all-diffs-on-import.yml

----
-title: Force to recreate all MR diffs on import
-merge_request: 26480
-author:
-type: fixed

changelogs/unreleased/sh-fix-project-branches-merge-status.yml

----
-title: Fix API /project/:id/branches not returning correct merge status
-merge_request: 26785
-author:
-type: fixed

changelogs/unreleased/sh-fix-rugged-tree-entries.yml

----
-title: Avoid excessive recursive calls with Rugged TreeEntries
-merge_request: 26813
-author:
-type: fixed

changelogs/unreleased/sh-force-gc-after-import.yml

----
-title: Force a full GC after importing a project
-merge_request: 26803
-author:
-type: performance