CODEOWNERS: Update owners of Alert List panel (#50068)

Previously still tagged every member of the alerting squad

.github/CODEOWNERS

@@ -112,7 +112,7 @@ pkg/tsdb/testdatasource/sims/ @grafana/grafana-edge-squad
 /public/app/features/explore/ @grafana/observability-experience-squad
 /public/app/features/plugins @grafana/plugins-platform-frontend
 /public/app/features/transformers/spatial @grafana/grafana-edge-squad
-/public/app/plugins/panel/alertlist @grafana/alerting-squad
+/public/app/plugins/panel/alertlist @grafana/alerting-squad-frontend
 /public/app/plugins/panel/barchart @grafana/grafana-bi-squad
 /public/app/plugins/panel/heatmap @grafana/grafana-bi-squad
 /public/app/plugins/panel/histogram @grafana/grafana-bi-squad