Instaling the mailinglist plugin fails because needs ruby >=2.2.7
:/noosfero# script/noosfero-plugins install mailing_list
=> Verifying debian dependencies...
=> Done!
An error occurred while installing acts-as-taggable-on (5.0.0), and Bundler cannot continue.
Make sure that `gem install acts-as-taggable-on -v '5.0.0'` succeeds before bundling.
W: failed to load dependencies for mailing_list; not enabling
gem install acts-as-taggable-on -v '5.0.0'
ERROR: Error installing acts-as-taggable-on:
acts-as-taggable-on requires Ruby version >= 2.2.7.