update basetool dependencies to use root crewai repo

src/crewai_tools/tools/nl2sql/nl2sql_tool.py

@@ -1,11 +1,10 @@
-from typing import Any, Union
+from typing import Any, Type, Union
 
-from ..base_tool import BaseTool
+from crewai.tools import BaseTool
 from pydantic import BaseModel, Field
 from sqlalchemy import create_engine, text
 from sqlalchemy.orm import sessionmaker
 
-from typing import Type, Any
 
 class NL2SQLToolInput(BaseModel):
     sql_query: str = Field(
@@ -13,6 +12,7 @@ class NL2SQLToolInput(BaseModel):
         description="The SQL query to execute.",
     )
 
+
 class NL2SQLTool(BaseTool):
     name: str = "NL2SQLTool"
     description: str = "Converts natural language to SQL queries and executes them."