Deprecate `options` key for internal_events yaml

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/145007



Merged-by: Tetiana Chupryna <tchupryna@gitlab.com>
Approved-by: Sarah Yasonik <syasonik@gitlab.com>
Approved-by: Tetiana Chupryna <tchupryna@gitlab.com>
Reviewed-by: Sarah Yasonik <syasonik@gitlab.com>
Co-authored-by: michold <mwielich@gitlab.com>