[!141] missing APPEND in add_library for python target added

Merge branch 'bugfix/MissingAppend' into 'master'

See merge request [!141]

  [!141]: Nonecore/dune-geometry/merge_requests/141

python/dune/geometry/CMakeLists.txt

@@ -4,4 +4,4 @@ add_python_targets(geometry
   quadpy
 )
 dune_add_pybind11_module(NAME _geometry)
-set_property(TARGET _geometry PROPERTY LINK_LIBRARIES dunecommon dunegeometry)
+set_property(TARGET _geometry PROPERTY LINK_LIBRARIES dunecommon dunegeometry APPEND)