Update langchain-text-splitters requirement

Updates the requirements on [langchain-text-splitters](https://github.com/langchain-ai/langchain) to permit the latest version.
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain-text-splitters==0.0.2...langchain-text-splitters==0.3.0)

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

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

Author: dependabot[bot]

topic/machine-learning/llm-langchain/requirements.txt

@@ -4,7 +4,7 @@ cratedb-toolkit==0.0.15
 google-cloud-aiplatform<2
 langchain-google-vertexai<2
 langchain-openai<0.2
-langchain-text-splitters<0.3
+langchain-text-splitters<0.4
 pueblo[cli,nlp]==0.0.9
 pydantic>=1,<3
 pypdf<5