chore(deps): update dependency langchain-text-splitters to v0.3.9 [security] (#2403)

Author: renovate-bot

gemini/sample-apps/genwealth/function-scripts/process-pdf/requirements.txt

@@ -8,4 +8,4 @@ langchain==0.3.15
 langchain-core==0.3.31
 langchain-google-alloydb-pg==0.9.3
 langchain-google-vertexai==2.0.15
-langchain-text-splitters==0.3.5
+langchain-text-splitters==0.3.9

gemini/sample-apps/llamaindex-rag/pyproject.toml

@@ -114,7 +114,7 @@ langchain-community = "0.3.20"
 langchain-core = "0.3.49"
 langchain-google-vertexai = "1.0.10"
 langchain-openai = "0.3.12"
-langchain-text-splitters = "0.3.7"
+langchain-text-splitters = "0.3.9"
 langsmith = "0.3.22"
 llama-cloud = "0.1.17"
 llama-index-agent-openai = "0.4.6"