[Ownership] Assign test files to mgmt team (elastic#200989)

## Summary

Assign test files to mgmt team

Contributes to: elastic#192979

.github/CODEOWNERS

@@ -1966,6 +1966,9 @@ x-pack/test/api_integration/apis/management/index_management/inference_endpoints
 /x-pack/test/functional_search/ @elastic/search-kibana
 
 # Management Experience - Deployment Management
+/test/functional/fixtures/kbn_archiver/management.json @elastic/kibana-management @elastic/kibana-data-discovery # Assigned per 2 uses: test/functional/apps/management/_import_objects.ts && test/functional/apps/management/data_views/_scripted_fields_filter.ts
+/x-pack/test/functional/fixtures/kbn_archiver/home/feature_controls/security/security.json @elastic/kibana-management
+/x-pack/test/functional/es_archives/upgrade_assistant @elastic/kibana-management
 /x-pack/test/functional/services/ace_editor.js @elastic/kibana-management
 /x-pack/test/functional/page_objects/remote_clusters_page.ts @elastic/kibana-management
 /x-pack/test/stack_functional_integration/apps/ccs @elastic/kibana-management