should libpq also require TLSv1.2 by default?

In PG13, we raised the server-side default of ssl_min_protocol_version 
to TLSv1.2.  We also added a connection setting named 
ssl_min_protocol_version to libpq.  But AFAICT, the default value of the 
libpq setting is empty, so any protocol version will be accepted.  Is 
this what we wanted?  Should we raise the default in libpq as well?

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services