docs: sql_qa.ipynb tutorial update (#21756)

1. Updated deprecated method usage.
2. Added LangGraph required installation in tutorial.

X: MichaelOzery

docs/docs/tutorials/sql_qa.ipynb

@@ -458,7 +458,22 @@
    "metadata": {},
    "source": [
     "### Initializing agent\n",
-    "\n",
+    "First, get required package **LangGraph**"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%pip install --upgrade --quiet langgraph"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
     "We will use a prebuilt [LangGraph](/docs/concepts/#langgraph) agent to build our agent"
    ]
   },
@@ -472,7 +487,7 @@
     "from langgraph.prebuilt import chat_agent_executor\n",
     "\n",
     "agent_executor = chat_agent_executor.create_tool_calling_executor(\n",
-    "    llm, tools, system_message=system_message\n",
+    "    llm, tools, messages_modifier=system_message\n",
     ")"
    ]
   },
@@ -711,7 +726,7 @@
     "system_message = SystemMessage(content=system)\n",
     "\n",
     "agent = chat_agent_executor.create_tool_calling_executor(\n",
-    "    llm, tools, system_message=system_message\n",
+    "    llm, tools, messages_modifier=system_message\n",
     ")"
    ]
   },