Bump langchain-text-splitters from 0.3.8 to 0.3.9

Bumps [langchain-text-splitters](https://github.com/langchain-ai/langchain) from 0.3.8 to 0.3.9.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-text-splitters==0.3.8...langchain-text-splitters==0.3.9)

---
updated-dependencies:
- dependency-name: langchain-text-splitters
  dependency-version: 0.3.9
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -67,7 +67,7 @@ langchain==0.3.26
 langchain-community==0.3.27
 langchain-core==0.3.79
 langchain-mcp-adapters==0.1.10
-langchain-text-splitters==0.3.8
+langchain-text-splitters==0.3.9
 langsmith==0.4.4
 llama-cloud==0.1.43
 llama-cloud-services==0.6.76