Bump langchain-core in /ai/gen-ai-agents/assistant-secretary-agent/files

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.3.29 to 0.3.80.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.3.29...langchain-core==0.3.80)

---
updated-dependencies:
- dependency-name: langchain-core
  dependency-version: 0.3.80
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ai/gen-ai-agents/assistant-secretary-agent/files/local_requirements.txt

@@ -34,7 +34,7 @@ jsonschema==4.23.0
 jsonschema-specifications==2024.10.1
 langchain==0.3.14
 langchain-community==0.3.14
-langchain-core==0.3.29
+langchain-core==0.3.80
 langchain-experimental==0.3.4
 langchain-text-splitters==0.3.9
 langgraph==0.2.62