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Upgrade `reline` to `0.4` and add custom color scheme to `RubyShell` #177

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Run time

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Job	Run time
rubocop	15s
Ruby 3.0	11s
Ruby 3.1	13s
Ruby 3.2	11s
Ruby 3.3	17s
Ruby jruby	46s
Ruby truffleruby	38s
	2m 31s