"Changes" tab doesn't work in Safari
### Summary
"Changes" tab doesn't work in Safari under macOS Big Sur after latest GitLab EE update (13.12)
### Steps to reproduce
Open random Merge Request and go to "Changes" tab.
### Relevant logs and/or screenshots

### Fix
Upgrade to 13.12.3 (or later) for https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62961 "Set CSP back to disabled by default" https://about.gitlab.com/releases/2021/06/07/gitlab-13-12-3-released/
issue