irssi: blocked from reading /etc/ssl/openssl.cnf due to missing #include <abstractions/openssl>

When using irssi to connect to an IRC server over TLS, access to the OpenSSL configuration is blocked, presumably because #include <abstractions/openssl> is missing from the irssi profile.

Oct 14 09:06:01 audit[989383]: AVC apparmor="DENIED" operation="open" profile="/usr/bin/irssi" name="/etc/ssl/openssl.cnf" pid=989383 comm="irssi" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0