[ruby/base64] Bump required_ruby_version to 2.4.0
The gem depends on String#unpack1, which was introduced in Ruby 2.4.
https://github.com/ruby/base64/commit/9f0e4ba155
Added by jeremyevans (Jeremy Evans) almost 2 years ago
[ruby/base64] Bump required_ruby_version to 2.4.0
The gem depends on String#unpack1, which was introduced in Ruby 2.4.
https://github.com/ruby/base64/commit/9f0e4ba155