[Hugo extended 0.141.0 upgrade] Requires docsy 0.12.0 or patch

In order to upgrade to Hugo extended version 0.141.0, a new version of docsy needs to be released unless we add the patch changes from https://github.com/google/docsy/pull/2177

This may be worth it since it's unclear when docsy 0.12.0 will be released (was supposed to be Q1), and we don't want to get too far behind on Hugo.