[Security Solution] Security Assistant: updates CODEOWNERS (elastic#19)

## Summary

- updated `.github/CODEOWNERS` with `node scripts/generate codeowners`

.github/CODEOWNERS

@@ -319,9 +319,9 @@ packages/kbn-docs-utils @elastic/kibana-operations
 packages/kbn-dom-drag-drop @elastic/kibana-visualizations @elastic/kibana-data-discovery
 packages/kbn-ebt-tools @elastic/kibana-core
 packages/kbn-ecs @elastic/kibana-core @elastic/security-threat-hunting-investigations
-x-pack/packages/kbn-elastic-assistant @elastic/security-solution
 x-pack/packages/security-solution/ecs_data_quality_dashboard @elastic/security-threat-hunting-investigations
 x-pack/plugins/ecs_data_quality_dashboard @elastic/security-threat-hunting-investigations
+x-pack/packages/kbn-elastic-assistant @elastic/security-solution
 test/plugin_functional/plugins/elasticsearch_client_plugin @elastic/kibana-core
 x-pack/test/plugin_api_integration/plugins/elasticsearch_client @elastic/kibana-core
 x-pack/plugins/embeddable_enhanced @elastic/kibana-presentation