[Langchain_community]: Corrected the imports to make them compatible with Sqlachemy <2.0 (#17653)

- Small Change in Imports in sql_database module to make it work with
Sqlachemy <2.0
 - This was identified in the following issue: #17616

libs/community/langchain_community/utilities/sql_database.py

@@ -7,18 +7,17 @@ import sqlalchemy
 from langchain_core._api import deprecated
 from langchain_core.utils import get_from_env
 from sqlalchemy import (
-    Executable,
     MetaData,
-    Result,
     Table,
     create_engine,
     inspect,
     select,
     text,
 )
-from sqlalchemy.engine import Engine
+from sqlalchemy.engine import Engine, Result
 from sqlalchemy.exc import ProgrammingError, SQLAlchemyError
 from sqlalchemy.schema import CreateTable
+from sqlalchemy.sql.expression import Executable
 from sqlalchemy.types import NullType