re-pin versions o that a proxy issue no longer occurs

[claythearc]

Somewhere up the chain a proxy error was introduced in either openAI or anthropic SDK (or both?) this fixes that

clay@clay:~/vulnhuntr$ poetry run vulnhuntr -r /home/clay/django-geostore/ -l claude
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/clay/vulnhuntr/vulnhuntr/__main__.py", line 348, in run
    llm = initialize_llm(args.llm)
  File "/home/clay/vulnhuntr/vulnhuntr/__main__.py", line 289, in initialize_llm
    llm = Claude(anth_model, anth_base_url, system_prompt)
  File "/home/clay/vulnhuntr/vulnhuntr/LLMs.py", line 81, in __init__
    self.client = anthropic.Anthropic(max_retries=3, base_url=base_url)
  File "/home/clay/.cache/pypoetry/virtualenvs/vulnhuntr-MspkhdD9-py3.10/lib/python3.10/site-packages/anthropic/_client.py", line 121, in __init__
    super().__init__(
  File "/home/clay/.cache/pypoetry/virtualenvs/vulnhuntr-MspkhdD9-py3.10/lib/python3.10/site-packages/anthropic/_base_client.py", line 835, in __init__
    self._client = http_client or SyncHttpxClientWrapper(
  File "/home/clay/.cache/pypoetry/virtualenvs/vulnhuntr-MspkhdD9-py3.10/lib/python3.10/site-packages/anthropic/_base_client.py", line 733, in __init__
    super().__init__(**kwargs)
TypeError: Client.__init__() got an unexpected keyword argument 'proxies'