Remove version pin of typing-extensions

[wangkuiyi]

The pinned version is pretty old. When I am using a modern pydantic, it complains the need of a newer version of typing-extentions.

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
pydantic 2.10.1 requires typing-extensions>=4.12.2, but you have typing-extensions 4.11.0 which is incompatible.

[ruomingp]

Thanks. Is there an internal PR that passes CI?

[wangkuiyi]

Yes, @ruomingp . The internal PR 966 passed the CI.

[wangkuiyi]

I apologize that I couldn't reproduce the issue that trigger me to file this pull request. When I tried to install Axlearn and projects depending on it, I got typing_extensions==4.11.0 that works well with pydantic==2.9.2.

pydantic                       2.9.2
pydantic_core                  2.23.4
typing_extensions              4.11.0