Update CHANGELOG.md for 10.5.5

[ci skip]

CHANGELOG.md

@@ -2,6 +2,20 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 10.5.5 (2018-03-15)
+
+### Fixed (3 changes)
+
+- Fix missing uploads after group transfer. !17658
+- Fix code and wiki search results when filename is non-ASCII.
+- Remove double caching of Repository#empty?.
+
+### Performance (2 changes)
+
+- Adding missing indexes on taggings table.
+- Add index on section_name_id on ci_build_trace_sections table.
+
+
 ## 10.5.4 (2018-03-08)
 
 ### Fixed (11 changes)

changelogs/unreleased/fix-code-search-500-with-non-ascii-filename.yml

----
-title: Fix code and wiki search results when filename is non-ASCII
-merge_request:
-author:
-type: fixed

changelogs/unreleased/sh-add-missing-acts-as-taggable-indices.yml

----
-title: Adding missing indexes on taggings table
-merge_request:
-author:
-type: performance

changelogs/unreleased/sh-add-section-name-index.yml

----
-title: Add index on section_name_id on ci_build_trace_sections table
-merge_request:
-author:
-type: performance

changelogs/unreleased/sh-remove-double-caching-repo-empty.yml

----
-title: Remove double caching of Repository#empty?
-merge_request:
-author:
-type: fixed