add changelog for v1.10.5 (#10628) (#10631)

Co-authored-by: zeripath <art27@cantab.net>

Author: lunny

CHANGELOG.md

@@ -467,6 +467,11 @@ been added to each release, please refer to the [blog](https://blog.gitea.io).
   * Update CodeMirror to version 5.49.0 (#8381)
   * Wiki editor: enable side-by-side button (#7242)
 
+## [1.10.5](https://github.com/go-gitea/gitea/releases/tag/v1.10.5) - 2020-03-06
+
+* BUGFIXES
+  * Fix release attachments being deleted while upgrading (#10572) (#10574)
+
 ## [1.10.4](https://github.com/go-gitea/gitea/releases/tag/v1.10.4) - 2020-02-16
 
 * FEATURE