Install and require at least ruby 3.1

[moozzi]

No description provided.

[postmodern]

@moozzi I wonder if GitHub Actions is running the commands under bash instead of zsh or if zsh isn't loading the ~/.zshrc file the script modifies?

[moozzi]

@postmodern homebrew_install_ruby()is not even called because macos-latest ships with ruby 3.0.7

[postmodern]

Ah ha. We need to upgrade the ruby_version check for >= 3.1.0. Maybe something like:

if [[ -z "$ruby_version" ]] || [[ "$ruby_version" == "2."* ]] || [[ "$ruby_version" == "3.0."* ]]; then

[postmodern]

• Style suggestion.
• Need to do the same fix to ronin-install.sh and test/ronin_install_test.sh as well.