INTPYTHON-829 - Update changelog + version for langgraph-checkpoint-mongodb 0.3.0 release (#275)

Author: NoahStapp

libs/langgraph-checkpoint-mongodb/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ---
 
+## Changes in version 0.3.0 (2025/11/19)
+- Allow custom serde objects to be passed to MongoDBSaver for serialization/deserialization.
+- Remove the deprecated AsyncMongoDBSaver class, which has been replaced by MongoDBSaver's async methods.
+- Update dependencies to require LangChain and LangGraph versions 1.0.0 and above.
+
 ## Changes in version 0.2.2 (2025/11/13)
 
 - Bumps minimum version of langgraph-checkpoint to 3.0 to address the Remode Code Execution CVE in JsonPlusSerializer's "json" mode, described [here](https://osv.dev/vulnerability/GHSA-wwqv-p2pp-99h5).

libs/langgraph-checkpoint-mongodb/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph-checkpoint-mongodb"
-version = "0.2.2"
+version = "0.3.0"
 description = "Library with a MongoDB implementation of LangGraph checkpoint saver."
 readme = "README.md"
 requires-python = ">=3.10"