Update token_count_utils.py

[ginward]

Update the token counts of new gpt models

ref: https://platform.openai.com/docs/models/gpt-4-turbo-and-gpt-4

Why are these changes needed?

Open AI has updated the token counts of certain models and redirected gpt-3.5-turbo to a later version with a larger context window

Checks

• [Y] I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• [Y] I've added tests (if relevant) corresponding to the changes introduced in this PR.
• [Y] I've made sure all auto checks have passed.

[yiranwu0]

Please format the code with pre-commit command to pass the code. After that, I think it's good to go!

[ginward]

Thanks! I Have formatted the code with pre-commit.