Re: "openssl" should not be optional

Re: Daniel Gustafsson
> > In the meantime, I also got the report that postgresql-17 is not
> > failing in that environment, so the problem is new in 18.
> 
> That's odd, off the cuff I don't see anything materially different around this
> but I'll do some more digging.  It will at least be fixed by 18.1.

Because I had already added openssl to 17's build-dependencies and
forgot to port that change to 18 *blush*:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1096243

Christoph