net-im/concord: Update 2.3.0 => 2.4.0

Changelogs:

• https://github.com/Cogmasters/concord/releases/tag/v2.4.0
• https://github.com/Cogmasters/concord/compare/v2.3.0...v2.4.0

• Add a dev branch notice
• Add Components V2

PR: 288701
Approved by: yuri@ (Mentor)