Depend on libssl1.0.2

[phoe]

On my machine, (ql:quickload :qtwebkit) results with:

Unable to load foreign library (QTNETWORK).
  Error opening shared object "/home/phoe/.roswell/lisp/quicklisp/dists/quicklisp/software/qt-libs-20180711-git/standalone/qtlibs!QtNetwork.so":
  /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.2: version `OPENSSL_1.0.0' not found (required by /home/phoe/.roswell/lisp/quicklisp/dists/quicklisp/software/qt-libs-20180711-git/standalone/qtlibs!QtNetwork.so).
   [Condition of type CFFI:LOAD-FOREIGN-LIBRARY-ERROR]

libssl1.0.0 is not even provided on debian sid anymore due to its age and was replaced with libssl1.0.2 which I have installed by default.