Use custom terser gem
What does this MR do?
Use terser from a custom repository that has changes from https://github.com/ahorek/terser-ruby/pull/6. This is temporary until that PR is accepted and a new release is cut.
Closes: omnibus-gitlab#5716 (closed)
Screenshots
Does this MR meet the acceptance criteria?
Conformity
Edited by Balasankar 'Balu' C