chore: update doclet version (#1513)
chore: update doclet version (#1513)

Co-authored-by: Neenu Shaji <d324e0fea8f736c13d1f74caad519d96a77d7d5f@users.noreply.github.com>
googleapis/gax-java,googleapis/gax-java,vam-google/gax-java,vam-google/gax-java