Pydantic v2 migration (#5167)
Pydantic v2 has been out for some time now. We have been relying on
using the v1 API available in v2 until now. This is a refresh of #3902
to bring proper v2 support to DeepSpeed.
Corresponding DeepSpeed-MII PR
[here](https://github.com/microsoft/DeepSpeed-MII/pull/423).
@loadams
---------
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>
Co-authored-by: Logan Adams <loadams@microsoft.com>
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
Co-authored-by: Abhishek Kulkarni <11399+adk9@users.noreply.github.com>
Co-authored-by: Abhishek Kulkarni <abkulkarni@microsoft.com>
Co-authored-by: Lev Kurilenko <113481193+lekurile@users.noreply.github.com>
