docs: changelog

Author: djs0109

CHANGELOG.md

@@ -3,6 +3,7 @@
 - add: tutorials for multi-entity ([#260](https://github.com/RWTH-EBC/FiLiP/pull/260))
 - add: add ``update_entity_relationships`` to allow relationship update ([#271](https://github.com/RWTH-EBC/FiLiP/pull/271))
 - add: flag to determine the deletion of registration when clearing the CB ([#267](https://github.com/RWTH-EBC/FiLiP/pull/267))
+- fix: rework tutorials for pydantic v2 ([#259](https://github.com/RWTH-EBC/FiLiP/pull/259))
 
 ### v0.4.1
 - fix: Session added as optional parameter to enable tls communication with clients ([#249](https://github.com/RWTH-EBC/FiLiP/pull/249))