Bump langchain-core from 0.2.35 to 0.2.38

Bumps [langchain-core](https://github.com/langchain-ai/langchain) from 0.2.35 to 0.2.38.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-core==0.2.35...langchain-core==0.2.38)

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

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

requirements/requirements.txt

@@ -65,7 +65,7 @@ jsonpointer==3.0.0
     # via jsonpatch
 langchain-anthropic==0.1.23
     # via -r requirements/requirements.in
-langchain-core==0.2.35
+langchain-core==0.2.38
     # via
     #   -r requirements/requirements.in
     #   langchain-anthropic