Add Changelog entry for commit builds page fix

CHANGELOG

@@ -2,6 +2,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 v 8.8.0 (unreleased)
   - Remove future dates from contribution calendar graph.
+  - Fix error when visiting commit builds page before build was updated
 v 8.7.1 (unreleased)
   - Fix .gitlab-ci.yml parsing issue when hidde job is a template without script definition. !3849