Update git submodules

* Update os-traits from branch 'master'
  to c23f37c0e88ddec409f52c10ee404095340478d8
  - Merge "add pyproject.toml to support pip 23.1"
  - add pyproject.toml to support pip 23.1
    
    pip 23.1 removed the "setup.py install" fallback for projects
    that do not have pyproject.toml and now uses a pyproject.toml
    which is vendored in pip.
    To address that, this change adds the minimal pyproject.toml
    to enable pbr to be properly used to build editable wheels.
    
    This is required to support installing devstack on
    centos stream 9 and related distros with GLOBAL_VENV=True
    Without this change the wsgi scripts are not generated in
    editable mode. i.e. pip install -e /opt/stack/keystone
    
    See https://pip.pypa.io/en/stable/news/#v23-1
    and pypa/pip#8368 for more
    details on the removal of the fallback support.
    
    setuptools v64.0.0 is used to support editable installs
    via its PEP-660 implmentation
    pypa/setuptools#3488
    
    Change-Id: I50be314d6d2578fa5b7f3a46fb72502d9f38d5e8