fix reading calibration in raw form

Author: lnotspotl

bindings/python/src/DeviceBindings.cpp

@@ -797,15 +797,23 @@ void DeviceBindings::bind(pybind11::module& m, void* pCallstack) {
         .def(
             "readCalibrationRaw",
             [](DeviceBase& d) {
-                py::gil_scoped_release release;
-                return d.readCalibrationRaw();
+                std::vector<uint8_t> data;
+                {
+                    py::gil_scoped_release release;
+                    data = d.readCalibrationRaw();
+                }
+                return py::bytes(reinterpret_cast<const char*>(data.data()), data.size());
             },
             DOC(dai, DeviceBase, readCalibrationRaw))
         .def(
             "readFactoryCalibrationRaw",
             [](DeviceBase& d) {
-                py::gil_scoped_release release;
-                return d.readFactoryCalibrationRaw();
+                std::vector<uint8_t> data;
+                {
+                    py::gil_scoped_release release;
+                    data = d.readFactoryCalibrationRaw();
+                }
+                return py::bytes(reinterpret_cast<const char*>(data.data()), data.size());
             },
             DOC(dai, DeviceBase, readFactoryCalibrationRaw))
         .def(