Standard Ubuntu and such no longer ship Py2 by default. So why're we? Python 3 is the 'Standard Python" now, and should be used, and where possible Py2 package deps should be dropped or updated.
Digging, it's the zh-hans language support. in the seed. Drop that and we should be able to drop Py2 as a dependency.
Alternatively, remove the language packs after installation, like standard Ubuntu does if the langs are not needed or selected.