multiple: pydantic 2 compatibility, v0.3 (#26443)

Signed-off-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
Co-authored-by: Dan O'Donovan <dan.odonovan@gmail.com>
Co-authored-by: Tom Daniel Grande <tomdgrande@gmail.com>
Co-authored-by: Grande <Tom.Daniel.Grande@statsbygg.no>
Co-authored-by: Bagatur <baskaryan@gmail.com>
Co-authored-by: ccurme <chester.curme@gmail.com>
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Co-authored-by: Tomaz Bratanic <bratanic.tomaz@gmail.com>
Co-authored-by: ZhangShenao <15201440436@163.com>
Co-authored-by: Friso H. Kingma <fhkingma@gmail.com>
Co-authored-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Nuno Campos <nuno@langchain.dev>
Co-authored-by: Morgante Pell <morgantep@google.com>

libs/community/langchain_community/embeddings/oracleai.py

@@ -14,7 +14,7 @@ import traceback
 from typing import TYPE_CHECKING, Any, Dict, List, Optional
 
 from langchain_core.embeddings import Embeddings
-from langchain_core.pydantic_v1 import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 if TYPE_CHECKING:
     from oracledb import Connection
@@ -28,7 +28,7 @@ class OracleEmbeddings(BaseModel, Embeddings):
     """Get Embeddings"""
 
     """Oracle Connection"""
-    conn: Any
+    conn: Any = None
     """Embedding Parameters"""
     params: Dict[str, Any]
     """Proxy"""
@@ -37,8 +37,9 @@ class OracleEmbeddings(BaseModel, Embeddings):
     def __init__(self, **kwargs: Any):
         super().__init__(**kwargs)
 
-    class Config:
-        extra = "forbid"
+    model_config = ConfigDict(
+        extra="forbid",
+    )
 
     """
     1 - user needs to have create procedure,