Python 3.13 compatibility for extras.

[lazToum]

Describe the issue

1. pyautogen[retrievechat]
numpy>=2.1 is needed for pyautogen with python 3.13:
   https://github.com/ag2ai/ag2/blob/main/setup.py#L33
   But the pinned chromadb version (0.5.3) needs numpy >= 1.22.5, < 2.0.0:
   https://github.com/ag2ai/ag2/blob/main/setup.py#L51-L59
   https://github.com/chroma-core/chroma/blob/0.5.3/pyproject.toml#L24C3-L24C30
   So, pyautogen[retrievechat] cannot be installed on python 3.13

   ERROR: Cannot install chromadb==0.5.3 and numpy>=2.1 because these package versions have conflicting dependencies.
   
   The conflict is caused by:
      The user requested numpy>=2.1
      chromadb 0.5.3 depends on numpy<2.0.0 and >=1.22.5
   

2. pyautogen[retrievechat-qdrant]
   fastembed is not yet available for python 3.13:
   https://github.com/qdrant/qdrant-client/blob/master/pyproject.toml#L28-L33
   So, pyautogen[retrievechat-qdrant] cannot be installed on python 3.13:
   https://github.com/ag2ai/ag2/blob/main/setup.py#L95

   ERROR: Could not find a version that satisfies the requirement fastembed (from versions: none)
   ERROR: No matching distribution found for fastembed
   

Steps to reproduce

Try installing pyautogen with the retrievechat and/or retrievechat-qdrant extras with python 3.13.

Screenshots and logs

No response

Additional Information

• ag2 Version: 0.5.0
• Operating System: Fedora Linux 41(x86_64)
• Python Version: Python 3.13.0