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

Update Gitaly version

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/150603



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

-84074347b5ad5ff09fd4d6068c8bcdf356f7798c
+720261882a2bbd549cdbccded8ea9b3ca5af846f