Update pybind11 to v2.10.3

[meikuam]

Update pybind11 submodule version in order to be able to build the package with Python 3.11.

[meikuam]

Tested with commands (at ubuntu 22.04)

conda create -n py3.11 python=3.11 numpy
conda activate py3.11

git clone --recurse-submodules https://github.com/atom-moyer/getpy.git
cd lib/pybind11
git checkout  v2.10.3
cd ../..
python setup.py install