Bump langchain from 0.0.317 to 0.0.325 in /tutorials/genai-chatbot

Bumps [langchain](https://github.com/langchain-ai/langchain) from 0.0.317 to 0.0.325.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@v0.0.317...v0.0.325)

---
updated-dependencies:
- dependency-name: langchain
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tutorials/genai-chatbot/requirements.txt

@@ -33,7 +33,7 @@ jsonpatch==1.33
 jsonpointer==2.4
 jsonschema==4.19.1
 jsonschema-specifications==2023.7.1
-langchain==0.0.317
+langchain==0.0.325
 langsmith==0.0.51
 markdown-it-py==3.0.0
 MarkupSafe==2.1.3