Dependencies: Update to pgvector <0.4

Author: amotl

poetry.lock

@@ -16,7 +16,7 @@ langchain-core = ">=0.2.13,<0.4.0"
 psycopg = "^3"
 psycopg-pool = "^3.2.1"
 sqlalchemy = "^2"
-pgvector = "^0.2.5"
+pgvector = "<0.4"
 numpy = ">=1.21"
 
 [tool.poetry.group.docs.dependencies]