Bump langchain-core in /experimental/oran-chatbot-multimodal

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.1.3 to 0.1.30.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](https://github.com/langchain-ai/langchain/commits)

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

Signed-off-by: dependabot[bot] <[email protected]>

experimental/oran-chatbot-multimodal/requirements.txt

@@ -9,7 +9,7 @@ gspread==6.0.0
 jupyterlab==4.0.8
 langchain==0.0.352
 langchain_community==0.0.7
-langchain-core==0.1.3
+langchain-core==0.1.30
 langchain-nvidia-ai-endpoints==0.0.1
 llama-hub==0.0.43
 llama-index==0.9.22