[Docs] Add some missing installs (#649)

examples/agent_executor/base.ipynb

@@ -27,7 +27,7 @@
    "outputs": [],
    "source": [
     "%%capture --no-stderr\n",
-    "%pip install --quiet -U langchain langchain_openai langchainhub tavily-python"
+    "%pip install --quiet -U langgraph langchain langchain_openai langchainhub tavily-python"
    ]
   },
   {

examples/agent_executor/force-calling-a-tool-first.ipynb

@@ -32,7 +32,7 @@
    "outputs": [],
    "source": [
     "%%capture --no-stderr\n",
-    "%pip install --quiet -U langchain langchain_openai tavily-python"
+    "%pip install --quiet -U langgraph langchain langchain_openai tavily-python"
    ]
   },
   {

examples/agent_executor/human-in-the-loop.ipynb

@@ -32,7 +32,7 @@
    "outputs": [],
    "source": [
     "%%capture --no-stderr\n",
-    "%pip install --quiet -U langchain langchain_openai tavily-python"
+    "%pip install --quiet -U langgraph langchain langchain_openai tavily-python"
    ]
   },
   {
@@ -319,7 +319,7 @@
      ]
     },
     {
-     "name": "stdin",
+     "name": "stdout",
      "output_type": "stream",
      "text": [
       "[y/n] continue with: tool='tavily_search_results_json' tool_input={'query': 'weather in San Francisco'} log=\"\\nInvoking: `tavily_search_results_json` with `{'query': 'weather in San Francisco'}`\\n\\n\\n\" message_log=[AIMessage(content='', additional_kwargs={'function_call': {'arguments': '{\"query\":\"weather in San Francisco\"}', 'name': 'tavily_search_results_json'}})]? y\n"

examples/agent_executor/managing-agent-steps.ipynb

@@ -32,7 +32,7 @@
    "outputs": [],
    "source": [
     "%%capture --no-stderr\n",
-    "%pip install --quiet -U langchain langchain_openai tavily-python"
+    "%pip install --quiet -U langgraph langchain langchain_openai tavily-python"
    ]
   },
   {