Merge branch 'ai_gateway_blueprint_update' into 'master'

Update AI Gateway Blueprint

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/147499



Merged-by: Jessie Young <jessieyoung@gitlab.com>
Approved-by: Eduardo Bonet <ebonet@gitlab.com>
Approved-by: Denys Mishunov <dmishunov@gitlab.com>
Approved-by: Shekhar Patnaik <spatnaik@gitlab.com>
Approved-by: Jessie Young <jessieyoung@gitlab.com>
Reviewed-by: Denys Mishunov <dmishunov@gitlab.com>
Reviewed-by: Eduardo Bonet <ebonet@gitlab.com>
Reviewed-by: Pini Wietchner <pwietchner@gitlab.com>
Co-authored-by: David O'Regan <doregan@gitlab.com>
Co-authored-by: Shinya Maeda <shinya@gitlab.com>
Co-authored-by: Eduardo Bonet <ebonet@gitlab.com>