Prepare version 2.21.0

Signed-off-by: Pierre-Yves Lapersonne <pierreyves.lapersonne@orange.com>

Author: pylapp

CHANGELOG.md

@@ -23,20 +23,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [Diver] Missing execution permission for extract-emails-from-history.sh ([#171](https://github.com/Orange-OpenSource/floss-toolbox/issues/171))
 - [Diver] Failed to process repositories at path with whitespaces ([#172](https://github.com/Orange-OpenSource/floss-toolbox/issues/172))
 
-### Added
-
-- English template for email text generation about GitHub newcomers
-- Bug and feature request templates, and other files for the hygiene of the project
-
-### Changed
-
-- [Licenses Inventory] Update to v4.0.6 ([#160](https://github.com/Orange-OpenSource/floss-toolbox/issues/160))
-
-### Fixed
-
-- [Diver] Missing execution permission for extract-emails-from-history.sh ([#171](https://github.com/Orange-OpenSource/floss-toolbox/issues/171))
-- [Diver] Failed to process repositories at path with whitespaces ([#172](https://github.com/Orange-OpenSource/floss-toolbox/issues/172))
-
 ## [2.20.0](https://github.com/Orange-OpenSource/floss-toolbox/compare/2.20.0..2.19.0) - 2024-04-04
 
 ### Added