Fix SHA256 checksum for the .tar.gz Ruby 2.3.6 archive
Follow-up of !2172 (diffs, comment 52006697).
The SHA256 checksum can be found at https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-3-6-released/
Edited by GitLab Release Tools Bot
Follow-up of !2172 (diffs, comment 52006697).
The SHA256 checksum can be found at https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-3-6-released/