main/nodejs: use python3 in makedepends
So that python2 could be moved to community, see #11577 (closed)
Following advice in https://github.com/nodejs/help/issues/2363#issuecomment-568077773
So that python2 could be moved to community, see #11577 (closed)
Following advice in https://github.com/nodejs/help/issues/2363#issuecomment-568077773