composer(deps): bump friendsofsymfony/ckeditor-bundle

Bumps [friendsofsymfony/ckeditor-bundle](https://github.com/FriendsOfSymfony/FOSCKEditorBundle) from 2.4.0 to 2.6.0.
- [Release notes](https://github.com/FriendsOfSymfony/FOSCKEditorBundle/releases)
- [Changelog](https://github.com/FriendsOfSymfony/FOSCKEditorBundle/blob/2.x/CHANGELOG.md)
- [Commits](FriendsOfSymfony/FOSCKEditorBundle@2.4.0...2.6.0)

---
updated-dependencies:
- dependency-name: friendsofsymfony/ckeditor-bundle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>