Installation Failure on MacBook Air M3, Mac OS Sequoia 15.0.1

[Skippy-007]

When running "sudo gem install colorls" in Iterm2 the following error is displayed

ERROR: Error installing colorls:
The last version of public_suffix (>= 2.0.2, < 7.0) to support your Ruby & RubyGems was 5.1.1. Try installing it with gem install public_suffix -v 5.1.1 and then running the current command again
public_suffix requires Ruby version >= 3.0. The current ruby version is 2.6.10.210.