WIP Use Gitaly 1.61.0
Part of gitaly#1877 (closed)
Companion to https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/32105
See https://gitlab.com/gitlab-org/gitaly/blob/master/CHANGELOG.md#v1610
This ensure Gitaly security fixes that went into stable branches also reach master.
Edited by Jacob Vosmaer