Use Ruby 2.4.3 on the CI server
|Assignee:||Jean-Philippe Lang||% Done:|
The CI Server (http://www.redmine.org/builds/) uses Ruby 2.4.1. But the current stable release is 2.4.3 which has been released on December 14th.
I think we should use Ruby 2.4.3 to ensure that Redmine works with the latest stable Ruby.
Ruby versions on the CI server: