feat: Add support for langchain v0.2+ package versions in default installation

PiperOrigin-RevId: 653770976

Author: yeesian

setup.py

@@ -156,7 +156,7 @@
 
 langchain_extra_require = [
     "langchain >= 0.1.16, < 0.3",
-    "langchain-core < 0.2",
+    "langchain-core < 0.3",
     "langchain-google-vertexai < 2",
     "openinference-instrumentation-langchain >= 0.1.19, < 0.2",
     "tenacity <= 8.3",