explicitly require fiddle

[kbrock]

fiddle has been removed from ruby 3.5 standard gems.
This makes the gem dependency explicit.

ruby-3.3.5/lib/ruby/3.3.0/reline.rb:9: warning:
fiddle was loaded from the standard library,
but will no longer be part of the default gems starting from Ruby 3.5.0.
You can add fiddle to your Gemfile or gemspec to silence this warning.

[st0012]

We're leaning towards dropping the usage of fiddle instead in #769

[ima1zumi]

In windows.rb, we’re using fiddle. However, adding fiddle as a dependency might make gem install difficult in certain environments, so I’d prefer to avoid including it as a dependency. (But I have no idea...)

reline/lib/reline/io/windows.rb

Line 1 in aa5b278

require 'fiddle/import'

[kbrock]

Thank you