devel/ruby-build: Update to 20200115

• Switch 2.7.0-dev to 2.7 branch and added 2.8 definition
• Create truffleruby-19.3.0.2
• Update Ruby 2.3 to OpenSSL 1.0.2u
• Update rbx 3 to OpenSSL 1.0.2u
• Update rbx 2 to OpenSSL 1.0.2u
• Update Ruby 2.2 to OpenSSL 1.0.2u
• Update Ruby 2.1 to OpenSSL 1.0.2u
• Update Ruby 2.0.0 to OpenSSL 1.0.2u
• Update Ruby 1.9.3 to OpenSSL 1.0.2u
• Add TruffleRuby 19.3.1

Relnotes: https://github.com/rbenv/ruby-build/releases/tag/v20200115
Sponsored by: HAW International