Udate Changelog

Author: sachilles

Changelog.md

@@ -2,6 +2,13 @@
 
 This file only reflects the changes that are made in this image. Please refer to the upstream GitLab [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-foss/blob/master/CHANGELOG.md) for the list of changes in GitLab.
 
+**15.1.0**
+
+- gitlab: upgrade CE to v15.1.0
+- gitaly: upgrade to v15.1.0
+- gitlab-shell: upgrade to v14.7.4
+- gitlab-pages: upgrade to v1.59.0
+
 **15.0.3**
 - gitlab: upgrade CE to v15.0.3
 - gitaly: upgrade to v15.0.3