Bump transformers in /inference/generativeai/llm-workshop/chatbot-apps

Bumps [transformers](https://github.com/huggingface/transformers) from 4.30.2 to 4.38.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.30.2...v4.38.0)

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

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

inference/generativeai/llm-workshop/chatbot-apps/requirements.txt

@@ -6,4 +6,4 @@ unstructured==0.9.3
 langchainplus-sdk==0.0.8
 streamlit==1.23.1
 streamlit-chat==0.0.2.2
-transformers==4.30.2
+transformers==4.38.0