ruby-build 20210420

* warn eol for ruby 2.5

* Update dependencies on openssl-1.1.1j to openssl-1.1.1k

  See: https://www.openssl.org/news/vulnerabilities-1.1.1.html for related CVEs

* Added mruby-3.0.0

* Use GraalVM JDK11 builds since 8 is no longer available on macOS

* Add TruffleRuby 21.1.0

ruby-build 20210405

* Add JRuby 9.2.17.0 definition

* Use autoreconf -i instead of autoconf because autoconf-2.71+ is incompatible with 2.69 or before.

* Added 3.0.1, 2.7.3, 2.6.7, 2.5.9

ruby-build 20210309

* Bump openssl-1.1.1j

* Bump openssl-1.0.2u with rbx-4 and rbx-5

* fix location of jruby 9.2.15.0

* Add definition for JRuby 9.2.16.0

  https://www.jruby.org/2021/03/03/jruby-9-2-16-0.html

ruby-build 20210119

* Add definition for Ruby 3.1.0-dev

  Development of 3.1.0 started.
  ruby/ruby@c591ab1

* Allow to install Artichoke's ARM builds on macOS

* Add TruffleRuby 21.0.0

Bump version to 20201225

Bump version to 20201221

Bump version to 20201210

Bump version to 20201208

ruby-build 20201118

* Add TruffleRuby GraalVM 20.3.0

ruby-build 20201117

* bump version to openssl-1.1.1d to 1.1.1h

* bump version to openssl-1.1.0j to 1.1.1h

* bump version to openssl-1.1.1g to 1.1.1h

* Add TruffleRuby 20.3.0