package/freerdp: bump version

Since we bumped to CMake-3.1, the build of FreeRDP is broken:

    CMake Error at channels/client/CMakeLists.txt:33 (list):
      list sub-command REMOVE_DUPLICATES requires list to be present.

This has been fixed upstream, so just bump the version to get that fix.

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>