chore(deps): bump langchain from 1.2.10 to 1.2.14

Bumps [langchain](https://github.com/langchain-ai/langchain) from 1.2.10 to 1.2.14.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==1.2.10...langchain==1.2.14)

---
updated-dependencies:
- dependency-name: langchain
  dependency-version: 1.2.14
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/base.txt

@@ -1,6 +1,6 @@
 
 isort==6.0.1
-langchain==1.2.10
+langchain==1.2.14
 langchain-community==0.4.1
 langchain-core==1.1.0
 langchain-experimental==0.4.1