Update Vale and Markdownlint versions and configuration

See merge request gitlab-org/gitlab-vscode-extension!1164

Merged-by: Tomas Vik <tvik@gitlab.com>
Approved-by: Amy Qualls <aqualls@gitlab.com>
Approved-by: Tomas Vik <tvik@gitlab.com>
Co-authored-by: Evan Read <eread@gitlab.com>

Check if actual code was added or not before providing suggestion

See merge request !1149

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

Update CHANGELOG and release docs

See merge request !1177

Merged-by: Tomas Vik <tvik@gitlab.com>
Approved-by: Tomas Vik <tvik@gitlab.com>
Reviewed-by: Tomas Vik <tvik@gitlab.com>
Co-authored-by: David O'Regan <doregan@gitlab.com>

doc: update package tags to include Duo Chat

See merge request !1176

Merged-by: David O'Regan <doregan@gitlab.com>
Co-authored-by: Pavel Shutsin <pshutsin@gitlab.com>