Fix #271 - Readline completely deprecated in Ruby 3.3 #61

Job	Run time
test (ubuntu-latest, head)	13s
test (ubuntu-latest, 3.3)	9s
test (ubuntu-latest, 3.2)	9s
test (ubuntu-latest, 3.1)	9s
test (ubuntu-latest, 3.0)	8s
test (ubuntu-latest, jruby)	34s
test (ubuntu-latest, jruby-head)	36s
test (ubuntu-latest, truffleruby)	27s
test (ubuntu-latest, truffleruby-head)	26s
test (ubuntu-latest, truffleruby+graalvm)	1m 31s
test (windows-latest, head)	1m 16s
test (windows-latest, 3.3)	3m 1s
test (windows-latest, mingw)	1m 18s
test (windows-latest, mswin)	1m 18s
test (windows-latest, ucrt)	49s
test (macos-latest, head)	14s
test (macos-latest, 3.3)	16s
	12m 34s

Provide feedback