chore(deps): update dependency langchain-google-vertexai to v2 (#119)

Co-authored-by: Averi Kitsch <akitsch@google.com>

Author: renovate-bot

pyproject.toml

@@ -43,7 +43,7 @@ test = [
     "pytest==8.3.3",
     "pytest-asyncio==0.24.0",
     "pytest-cov==5.0.0",
-    "langchain_google_vertexai==1.0.10"
+    "langchain_google_vertexai==2.0.8"
 ]
 
 [build-system]