Add 8.5.5 CHANGELOG items

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CHANGELOG

@@ -26,11 +26,12 @@ v 8.6.0 (unreleased)
   - Show labels in dashboard and group milestone views
   - Add main language of a project in the list of projects (Tiago Botelho)
   - Add ability to show archived projects on dashboard, explore and group pages
-  - Fix pagination for filtered dashboard and explore pages
 
 v 8.5.5
-  - Ensure removing a project removes associated Todo entries.
-  - Prevent a 500 error in Todos when author was removed.
+  - Ensure removing a project removes associated Todo entries
+  - Prevent a 500 error in Todos when author was removed
+  - Fix pagination for filtered dashboard and explore pages
+  - Fix "Show all" link behavior
 
 v 8.5.4
   - Do not cache requests for badges (including builds badge)