Release langchain-community==0.2.4

Changes since langchain-community==0.2.3

community[patch]: Release 0.2.4 (#22643)
multiple: get rid of pyproject extras (#22581)
community: support Databricks Unity Catalog functions as LangChain tools (#22555)
community[patch]: pgvector replace nin_ by not_in (#22619)
community[patch]: recursive url loader fix and unit tests (#22521)
community[patch]:Support filter for AzureAISearchRetriever (#22303)
docs: duckduckgosearch options listed (#22568)
community[minor]: add DashScope Rerank (#22403)
[Community]add option to delete the prompt from HF output (#22225)
community[patch]: AzureSearch async functions (#22075)
community: update how OpenAIAssistantV2Runnable creates threads with tool_resources (#22549)