update basetool dependencies to use root crewai repo

src/crewai_tools/tools/rag/rag_tool.py

@@ -1,10 +1,9 @@
 from abc import ABC, abstractmethod
 from typing import Any
 
+from crewai.tools import BaseTool
 from pydantic import BaseModel, Field, model_validator
 
-from crewai_tools.tools.base_tool import BaseTool
-
 
 class Adapter(BaseModel, ABC):
     class Config: