Merge branch 'release-tools/update-gitaly' into 'master'

Update Gitaly version

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/131062



Merged-by: release-tools approver bot <project278964_bot6@example.com>
Approved-by: release-tools approver bot <project278964_bot6@example.com>
Co-authored-by: GitLab Release Tools Bot <delivery-team+release-tools@gitlab.com>

GITALY_SERVER_VERSION

-f6193a424bcc235e906bc1ae82737b4ed58ec8fd
+638126d9b6839f340c151f55d66ec5742223c901