Bump the max-package-size to accommodate latest upstream gem changes
The Ubuntu 18.04 EE package is now just over 700MB
Part of gitlab-org/distribution/team-tasks#383 (closed)
With the second part being a bump for our packagecloud nginx max body size here: https://ops.gitlab.net/gitlab-cookbooks/chef-repo/merge_requests/1095
Edited by GitLab Release Tools Bot