Merge branch 'fix/sha256-avatar' into 'master'

feat: Use sha256 hash in avatar service

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142364



Merged-by: Abdul Wadood <awadood@gitlab.com>
Approved-by: Manoj M J <mmj@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Seth Falco <seth@falco.fun>