chore: update CODEOWNERS (autowarefoundation#2768)

Signed-off-by: GitHub <noreply@github.com>
Co-authored-by: kenji-miyake <kenji-miyake@users.noreply.github.com>
Signed-off-by: Alexey Panferov <lexavtanke@gmail.com>

.github/CODEOWNERS

@@ -115,7 +115,7 @@ perception/traffic_light_ssd_fine_detector/** daisuke.nishimatsu@tier4.jp @autow
 perception/traffic_light_visualization/** yukihiro.saito@tier4.jp @autowarefoundation/autoware-global-codeowners
 planning/behavior_path_planner/** fumiya.watanabe@tier4.jp kosuke.takeuchi@tier4.jp satoshi.ota@tier4.jp shumpei.wakabayashi@tier4.jp taiki.tanaka@tier4.jp takamasa.horibe@tier4.jp takayuki.murooka@tier4.jp tomoya.kimura@tier4.jp yutaka.shimizu@tier4.jp zulfaqar.azmi@tier4.jp @autowarefoundation/autoware-global-codeowners
 planning/behavior_velocity_planner/** kosuke.takeuchi@tier4.jp kyoichi.sugahara@tier4.jp makoto.kurihara@tier4.jp mamoru.sobue@tier4.jp satoshi.ota@tier4.jp shumpei.wakabayashi@tier4.jp taiki.tanaka@tier4.jp takayuki.murooka@tier4.jp tomohito.ando@tier4.jp tomoya.kimura@tier4.jp yutaka.shimizu@tier4.jp @autowarefoundation/autoware-global-codeowners
-planning/costmap_generator/** kenji.miyake@tier4.jp @autowarefoundation/autoware-global-codeowners
+planning/costmap_generator/** kosuke.takeuchi@tier4.jp takamasa.horibe@tier4.jp takayuki.murooka@tier4.jp yutaka.shimizu@tier4.jp @autowarefoundation/autoware-global-codeowners
 planning/external_velocity_limit_selector/** satoshi.ota@tier4.jp shinnosuke.hirakawa@tier4.jp shumpei.wakabayashi@tier4.jp tomohito.ando@tier4.jp tomoya.kimura@tier4.jp @autowarefoundation/autoware-global-codeowners
 planning/freespace_planner/** takamasa.horibe@tier4.jp @autowarefoundation/autoware-global-codeowners
 planning/freespace_planning_algorithms/** takamasa.horibe@tier4.jp @autowarefoundation/autoware-global-codeowners