Migrate to langchain_anthropic and add ChatAnthropic enhancements (#1551)

Migrate to langchain_anthropic and enhance ChatAnthropic functionality

- Replace langchain_community with langchain_anthropic for ChatAnthropic
- Add support for selecting the Claude model in ChatAnthropic
- Implement top_p and top_k parameter support in ChatAnthropic

pyproject.toml

@@ -60,7 +60,6 @@ cohere = "^4.47.0"
 python-multipart = "^0.0.7"
 sqlmodel = "^0.0.14"
 faiss-cpu = "^1.7.4"
-anthropic = "^0.15.0"
 orjson = "3.9.15"
 multiprocess = "^0.70.14"
 cachetools = "^5.3.1"
@@ -105,6 +104,8 @@ elasticsearch = "^8.12.0"
 pytube = "^15.0.0"
 llama-index = "0.9.48"
 langchain-openai = "^0.0.6"
+urllib3 = "<2"
+langchain-anthropic = "^0.1.4"
 
 [tool.poetry.group.dev.dependencies]
 pytest-asyncio = "^0.23.1"