message: fix: hold gil during PythonFileHandle destructor
diff: @@ -22,6 +22,10 @@ public:
  class PythonFileHandle : public FileHandle {
  public:
  PythonFileHandle(FileSystem &file_system, const string &path, const py::object handle);
  + ~PythonFileHandle() {
  + PythonGILWrapper gil;
  + handle.dec_ref();
  + }
  void Close() override {
  PythonGILWrapper gil;
  