chore(deps): bump langchain-core from 0.1.25 to 0.1.30 (#53)

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.1.25 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
...

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Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-langchain-core==0.1.25
+langchain-core==0.1.30
 langchain-community==0.0.21
 redis==5.0.1
 numpy==1.26.4