PyEval_CallObject is deprecated in Python 3.9

[ignatenkobrain]

/builddir/build/BUILD/libsolv-0.7.19/redhat-linux-build/bindings/python/solv_python.c: In function 'loadcallback':
/builddir/build/BUILD/libsolv-0.7.19/redhat-linux-build/bindings/python/solv_python.c:4353:5: warning: 'PyEval_CallObjectWithKeywords' is deprecated [-Wdeprecated-declarations]
 4353 |     PyObject *result = PyEval_CallObject((PyObject *)d, args);
      |     ^~~~~~~~
In file included from /usr/include/python3.10/Python.h:144,
                 from /builddir/build/BUILD/libsolv-0.7.19/redhat-linux-build/bindings/python/solv_python.c:157:
/usr/include/python3.10/ceval.h:17:43: note: declared here
   17 | Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I think simply replacing PyEval_CallObject with PyObject_CallObject should do the trick, but not sure if latter is available in everywhere what libsolv supports.