Bug#907788: "dh key too small" since openssl upgrade

[VA]

Package: curl
Version: 7.61.0-1

Since openssl upgrade to 1.1.1~~pre9-1, curl is not able anymore to do 
requests to some sites. For example:

% curl https://www.credit-cooperatif.coop/
curl: (35) error:141A318A:SSL routines:tls_process_ske_dhe:dh key too small

It used to work with curl, and it still works with wget (which uses gnutls).

I suspect it's related to #907015.