text: Title: Bump Anthropic dependency from 0.2.x to 0.3.x
  Body: We use Anthropic's Claude for evaluating Gorilla in `eval/`. This was tested for `anthropic==0.2.8` release, and needs to be updated to support the latest PyPI release (0.3.x). This involves cosmetic changes in two files [‎eval/get_llm_responses.py](https://github.com/ShishirPatil/gorilla/blob/c849d11833ce0d401df4ab5a4d854167ad861684/eval/get_llm_responses.py#L19) and [‎eval/get_llm_responses_retriever.py](https://github.com/ShishirPatil/gorilla/blob/c849d11833ce0d401df4ab5a4d854167ad861684/eval/get_llm_responses_retriever.py#L19)