Upgrade grpc-go from v1.9.1 to v1.16.0 in preparation for correlation ids
Closes #1398 (closed)
Changelog is reviewable here: https://github.com/grpc/grpc-go/releases
Also note that Workhorse is already using Go GRPC 1.16.0, since this MR by @bjk-gitlab gitlab-workhorse!310 (merged)
Edited by GitLab Release Tools Bot