[ruby/uri] Set required_ruby_version to 2.4 in gemspec
Tests pass on Ruby 2.4, but not on Ruby 2.3.
https://github.com/ruby/uri/commit/594418079a
[ruby/uri] Set required_ruby_version to 2.4 in gemspec
Tests pass on Ruby 2.4, but not on Ruby 2.3.
https://github.com/ruby/uri/commit/594418079a