Critical: Litellm supply chain attack may affect ii-agent

[Fried-Squid]

Litellm upstream issue BerriAI/litellm#24512

Versions 1.82.7 onwards are compromised with a malicious litellm_init.pth. In the pyproject.toml, the version is pinned to "litellm>=1.63.14" which could lead to installation of the compromised package.

Reccomended fix is to pin "litellm>=1.63.14,<1.82.7" - though the offending versions have been yanked from pypi, best practices are to ensure the offending versions are pinned out.