API: Present an array of Gitlab::Git::Tag instead of array of rugged tags

CHANGELOG

@@ -73,6 +73,7 @@ v 8.7.0 (unreleased)
   - Diffs load at the correct point when linking from from number
   - Selected diff rows highlight
   - Fix emoji categories in the emoji picker
+  - API: Properly display annotated tags for GET /projects/:id/repository/tags (Robert Schilling)
   - Add encrypted credentials for imported projects and migrate old ones
   - Author and participants are displayed first on users autocompletion
 

lib/api/tags.rb

@@ -12,7 +12,7 @@ module API
       # Example Request:
       #   GET /projects/:id/repository/tags
       get ":id/repository/tags" do
-        present user_project.repo.tags.sort_by(&:name).reverse,
+        present user_project.repository.tags.sort_by(&:name).reverse,
                 with: Entities::RepoTag, project: user_project
       end