Merge branch '22053-bump-gitlab-shell-to-have-git-trace' into 'master'

Use gitlab-shell v3.6.2

## What does this MR do?

Bump gitlab-shell to v3.6.2 to be able to enable GIT_TRACE_PERFORMANCE output to a log file

Relates #22053

See merge request !6367

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 v 8.13.0 (unreleased)
+  - Use gitlab-shell v3.6.2 (GIT TRACE logging)
   - Speed-up group milestones show page
   - Fix robots.txt disallowing access to groups starting with "s" (Matt Harrison)
   - Revoke button in Applications Settings underlines on hover.

GITLAB_SHELL_VERSION

-3.6.0
+3.6.2