⬆ Bump langchain-core from 0.2.28 to 0.2.30

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.2.28 to 0.2.30.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.2.28...langchain-core==0.2.30)

---
updated-dependencies:
- dependency-name: langchain-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -21,7 +21,7 @@ pytest-asyncio = "^0.23.8"
 pytest = "^8.3.2"
 pytest-mock = "^3.14.0"
 pytest-env = "^1.1.3"
-langchain-core = "^0.2.28"
+langchain-core = "^0.2.30"
 langchain = "^0.2.12"
 langchain-openai = "^0.1.20"
 python-dotenv = "^1.0.1"