[arch-dev-public] News item for openssh-7.0p1-1

Hi, I'd like to suggest the following piece of news to be posted when openssh-7.0p1-1 lands in [core]: The new openssh-7.0p1 release deprecates certain types of SSH keys that are now considered vulnerable. For details, see the [upstream announcement](http://lists.mindrot.org/pipermail/openssh-unix-announce/2015-August/000122....). Before updating and restarting sshd on remote hosts, if you rely on SSH keys for authentication, please make sure that you have a recent key pair set up, or alternative means of logging in (such as using password authentication). -- Gaetan