[ruby/reline] Use sort.last instead of sort.reverse.first

https://github.com/ruby/reline/commit/67f1d8d2d2

lib/reline/key_stroke.rb

@@ -84,7 +84,7 @@ class Reline::KeyStroke
 
   def expand(input)
     input = input.compress_meta_key
-    lhs = key_mapping.keys.select { |item| input.start_with? item }.sort_by(&:size).reverse.first
+    lhs = key_mapping.keys.select { |item| input.start_with? item }.sort_by(&:size).last
     return input unless lhs
     rhs = key_mapping[lhs]