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

bump version to 20201005

bump version to 20200926

ruby-build 20200819

* Add definition for JRuby 9.2.13.0

  JRuby 9.2.13.0 has been released.
  https://www.jruby.org/2020/08/03/jruby-9-2-13-0

* Add definition for mruby 2.1.2

* Add TruffleRuby 20.2.0

* Add GraalVM 20.2.0

ruby-build 20200727

* Fix installation of truffleruby+graalvm on macOS