huggingface[patch], pinecone[patch], fireworks[patch], mistralai[patch], voyageai[patch], togetherai[path]: convert Pydantic extras to literals (#25384)

Backwards compatible change that converts pydantic extras to literals
which is consistent with pydantic 2 usage.

- fireworks
- voyage ai
- mistralai
- mistral ai
- together ai
- huggigng face
- pinecone

libs/partners/pinecone/langchain_pinecone/embeddings.py

@@ -6,7 +6,6 @@ import aiohttp
 from langchain_core.embeddings import Embeddings
 from langchain_core.pydantic_v1 import (
     BaseModel,
-    Extra,
     Field,
     SecretStr,
     root_validator,
@@ -49,7 +48,7 @@ class PineconeEmbeddings(BaseModel, Embeddings):
     pinecone_api_key: Optional[SecretStr] = None
 
     class Config:
-        extra = Extra.forbid
+        extra = "forbid"
 
     @root_validator(pre=True)
     def set_default_config(cls, values: dict) -> dict: