chore(deps): bump langchain-tests from 0.3.17 to 0.3.20

Bumps [langchain-tests](https://github.com/langchain-ai/langchain) from 0.3.17 to 0.3.20.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-tests==0.3.17...langchain-tests==0.3.20)

---
updated-dependencies:
- dependency-name: langchain-tests
  dependency-version: 0.3.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/base.txt

@@ -6,7 +6,7 @@ langchain-core==0.3.65
 langchain-experimental==0.3.4
 langchain-openai==0.3.24
 langchain-pinecone==0.2.8
-langchain-tests==0.3.17
+langchain-tests==0.3.20
 langchain-text-splitters==0.3.8
 langchainhub==0.1.21
 langsmith==0.3.45