Passing numpy array containing strings

Issue description

Hi, I'm trying to write a code, which will receive the np.array containing strings, do some logic with them, and then return it back. The code worked perfectly, while I was passing numeric values.
It compiles but I get the following error:
RuntimeError: NumPy type info missing for PKc

The interesting thing that bothers me that if I fill a vector with some random strings it will convert it and return it without any problems

This is my C++ code:

#include <sstream>
#include <pybind11/stl.h>
#include <pybind11/numpy.h>
#include <stdlib.h> 
#include <cuda_runtime.h>

namespace py = pybind11;

py::array do_stuff(py::array_t<const char*> input) {
  std::vector<std::string> vec;
  py::buffer_info info = input.request();

  for (ssize_t i = 0; i < info.shape[0]; ++i) {
    vec.emplace_back(*input.data(i));
  }

  return py::array(py::cast(vec));
}


PYBIND11_MODULE(jam_lib, m) {
  // m.def("run", &run);
  m.def("do_stuff", &do_stuff);

#ifdef VERSION_INFO
    m.attr("__version__") = VERSION_INFO;
#else
    m.attr("__version__") = "dev";
#endif
}```

Start by reproducing the provided do_stuff entry point with a NumPy array containing strings, focusing on py::array_t<const char*> and input.request(). Check the pybind11 NumPy conversion behavior around the reported “NumPy type info missing for PKc” error. Done means the supported behavior or limitation is established and the issue has a clear resolution.