Ruby 2.7 support is back and new host_role config option

Added

• Re-add support for Ruby 2.7.
• Add the host_role config option. This config option can be set per host to generate some metrics automatically per host and possibly do things like grouping in the future.

Changed

• Bump agent to version d789895.

  • Increase short data truncation from 2000 to 10000 characters.

See the Ruby gem 3.4.11 changelog for more information.