sysutils/puppet7: Update to 7.24.0

Release notes:
https://www.puppet.com/docs/puppet/7/release_notes_puppet.html#release_notes_puppet_x-7-24-0

While here, cope with incompatible concurrent-ruby version installed
beside the needed one [1].

With hat: puppet
PR: 270482 [1]
Reported by: freebsd@wb9.se [1]