chore(deps): update dependency cloud-sql-python-connector to v1.20.2

Author: renovate-bot

requirements.txt

@@ -1,4 +1,4 @@
-cloud-sql-python-connector[asyncpg]==1.20.1
+cloud-sql-python-connector[asyncpg]==1.20.2
 llama-index-core==0.14.20
 pgvector==0.4.2
 SQLAlchemy[asyncio]==2.0.49