chore(checkpoint-postgres): bump to 3.0.1 (#6402)

**Description:** Bumping the checkpoint-postgres package to version
3.0.1 to release an update to migrations
(#6400).
**Issue:** N/A
**Dependencies:** N/A
**Twitter handle:** N/A

Author: jdrogers940

libs/checkpoint-postgres/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-postgres"
-version = "3.0.0"
+version = "3.0.1"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 authors = []
 requires-python = ">=3.10"