chore(deps): update dependency @gitlab/eslint-plugin to ^21.1.0

See merge request !2698



Merged-by: Juhee Lee <julee@gitlab.com>
Approved-by: Juhee Lee <julee@gitlab.com>
Co-authored-by: GitLab Renovate Bot <gitlab-bot@gitlab.com>

chore: clean up agenticChatSlashCommands feature flag

Closes #2014

See merge request !2713



Merged-by: Enrique Alcántara <ealcantara@gitlab.com>
Approved-by: Tomas Vik <tvik@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Co-authored-by: Elwyn Benson <ebenson@gitlab.com>

chore: remove duoWorkflowDiff feature flag

See merge request !2715



Merged-by: Enrique Alcántara <ealcantara@gitlab.com>
Approved-by: Enrique Alcántara <ealcantara@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Co-authored-by: Tomas Vik <tvik@gitlab.com>

feat: Update @gitlab-org/gitlab-lsp to 7.44.1

See merge request !2718



Merged-by: Tomas Vik <tvik@gitlab.com>
Approved-by: Tomas Vik <tvik@gitlab.com>
Co-authored-by: Enrique Alcantara <ealcantara@gitlab.com>

# **release**  [6.30.0](v6.29.0...v6.30.0) (2025-06-26)

### Features

* Update @gitlab-org/gitlab-lsp to 7.44.1 ([e8a96596](e8a96596))