Update Langchain libs

requirements.txt

@@ -4,7 +4,7 @@
 google-genai==0.3.0 # tentative version
 google-api-core==2.24.0
 google-cloud-storage==2.19.0
-google-cloud-aiplatform==1.74.0
+google-cloud-aiplatform==1.76.0
 google-cloud-bigquery==3.21.0
 cloudml-hypertune
 apache-beam==2.46.0
@@ -32,19 +32,19 @@ google-cloud-pipeline-components==2.8.0
 saliency==0.2.1
 
 # Langchain dependencies
-langchain==0.2.12
+langchain==0.3.14
 langsmith==0.1.129
-langchain-chroma==0.1.2
+langchain-chroma==0.1.4
 chroma-hnswlib==0.7.3
 chromadb==0.4.14
-langchain-community==0.2.11
-langchain-core==0.2.29
-langchain-google-vertexai==1.0.8
-langchain-text-splitters==0.2.2
+langchain-community==0.3.14
+langchain-core==0.3.29
+langchain-google-vertexai==2.0.10
+langchain-text-splitters==0.3.5
 
 # Utilities
 pyyaml==5.3.1
-pydantic==2.8.2
+pydantic==2.9.2
 pypdf==4.3.1
 faiss-cpu==1.7.4
 unstructured==0.14.4